i just need to help to figure out the last problem to find the operating income!

Job-Order Cost Sheets, Balance in Work in Process and Finished Goods Prull Company, a job-order costing firm, worked on three jobs in July. Data are as follows: Job 86 Job 87 Job 88 Balance, July 1 $21,210 $6,220 $0 Direct materials $12,380 $16,170 $10,360 $16,090 Direct labor $12,230 $23,900 Machine hours 510 280 1,010 Overhead is applied to jobs at the rate of $17 per machine hour. By July 31, Jobs 86 and 88 were completed. Jobs 82 and 86 were sold. Job 87 remained in process. On July 1, the balance in Finished Goods was $48,960 (consisting of Job 82 for $25,560 and Job 84 for $23,400) Prull prices its jobs at cost plus 30%. During July, variable marketing expenses were 5% of sales and fixed marketing expenses were $1,980, administrative expenses were $4760. (Round all amounts to the nearest dollar.) Required: 1. Prepare job-order cost sheets for all jobs in process during July, showing all costs through July 31 2. Calculate the balance in Work in Process on July 31 1. Prepare job-order cost sheets for all jobs in process during July, showing all costs through July 31. All amount cells must ha an entry, enter zeros as needed. Prull Company Score: 60/60 Job-Order Cost Sheets For the Month of July 1 Job 86 Job 87 Job 88 2 Balance, July 1 $21.210.00 $6.220.00 $0.00 3 Direct materials 10.360.00 12,380.00 16,170.00 4. Direct labor 16,090.00 12,230,00 23,900.00 5 Applied overhead 8.670.00 4.760.00 17.170.00 6 Total $56,330.00 $35,590.00 $57.240.00 2. Calculate the balance in Work in Process on July 31. The balance in Work in Process on July 31 is $35,590.00 Poin 3. Calculate the balance in Finished Goods on July 31. The balance in Finished Goods on July 31 is $80,640.00 Points 4. Calculate Cost of Goods Sold for July The cost of goods sold for July is $81,890.00 Points: 5. Calculate operating income for Prull Company for the month of July. The operating income for the month of July is $18,817.00 X Points