please explain

The Red Raider Co. provides services for both cash and on account. The accounts are adjusted monthly. For September, the following information is available: Accounts Receivable on September 1st is $31,200 Allowance for Doubtful Accounts on September 1st is $4,400. Services provided during September for cash $41,000 Service provided during September on account $57,000 During the month collections on account were $50,200 and accounts written off as bad debts were $3,000 A year end, the company ages its receivables to the following aging schedule Age of Accounts AR Curent Period Previous Period $35,000 $26.000 $9.000 Estimated 5% 50% Uncobacte What is the September oth net realizable value of Accounts Receivable? Do not use the dollar sign or a decimal in your answer. Commas are ok