Smith company has the following balances after prorating overapplied or underapplied overhead based on the ending balances of each account: work-in-process inventory $10,000 finished goods inventory $12,000 cost of goods sold $18,000 The following information is also available: Budgeted overhead $125,400 Actual overhead $127,000 Applied overhead $120,800 What is the cost of goods sold balance before proration? $18,720 $17,280 $20,790 $15,210