Balotelli Co. had 3,000 units in its inventory on January 1, 2010. The unit cost of goods in the beginning inventory is $9.77. Balotelli purchased 2,000 units on January 6 and 2,700 units on January 26. The unit costs for January 6 and January 26 purchases are $10.30 and $10.71, respectively. Balotelli sells 2,500 units on January 7 and 4,000 units on January 31. Assuming that Balotelli maintains periodic inventory records, what should be the inventory at January 31, using the average cost inventory method, rounded to the nearest dollar?

Answer is $12,284. Please show me how to get that answer.