Brianna's Boutique has the following transactions related to its top-selling Gucci purse for the month of October. Brianna's Boutique uses a periodic inventory system. Date October 1 October 4 October 10 Transactions Beginning Inventory Sale Purchase October 18 Sale October 20 October 28 October 30 Purchase Sale Purchase Units Unit Cost Total Cost 6453477 $770 $4,620 780 3,900 790 3,160 800 5,600 $17,280 4. Using weighted-average cost, calculate ending inventory and cost of goods sold at October 31. (Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.) Answer is complete but not entirely correct. Ending inventory $ 6,370.00 Cost of goods sold $ 10,910.00