Accounts Payable had a balance of $18,200 at the beginning of the month. During the month, three debits in the amounts of $4,700, $21,300, and $14,800 were posted to Accounts Payable, and three credits in the amounts of $3,600, $9,500, and $22,700 were posted to Accounts Payable. What is the ending balance of the Accounts Payable account