Excellent Company manufactures lamps. The estimated number of lamp sales for three months are as follows: Month Sales August 13,024 September 14,718 October 15,500 Finished goods inventory at the end of July was 3,600 units. Ending finished goods inventory is budgeted as 26% of the next month's sales. Excellent expects to sell the lamps for $30 each. In November, sales are projected at 18,000 lamps. How many lamps should be produced in September?