Assume a merchandising company uses the high-low method to separate any mixed costs into their variable and fixed elements. It provided the following income statements:

May June July

Sales in units 4,800 5,000 5,500

Sales$168,000 $175,000 $192,500

Cost of goods sold 86,400 90,000 99,000

Gross margin 81,600 85,000 93,500

Selling and administrative expenses:

Advertising 17,000 17,000 17,000

Shipping 16,800 17,500 19,250

Salaries and commissions 29,600 30,000 31,000

Total selling and administrative expenses 63,400 64,500 67,250

Net operating income$18,200 $20,500 $26,250

What is the estimated net operating income if the company sells 5,100 units?