Consider the following simplified financial statements for the Fire Corporation (assuming no income taxes): Sales Income Statement Costs Assets $33,950 $25,269 $50,476 Balance Sheet Debt Equity $18,308 ? The company has predicted a sales increase of 10 percent. Assume Fire pays out half of net income in the form of a cash dividend. Costs and assets vary with sales, but debt and equity do not. Determine the external financing needed. (Negative amount should be indicated by a minus sign.)