he company plans to maintain its debt structure in the future. If the firm has an after-tax cost of debt of 4.6 percent, a cost of preferred stock of 13.6 percent, and a cost of common stock of 18.6 percent, what is the firm's weighted average cost of capital?

Bonds.................1,114 Preferred stock.....257 Common stock.....3,748 Total....................5,119