(Weighted average cost of capital) The capital structure for the Carion Corporation is provided here: . The company plans to maintain its debt structure in the future. If the firm has an after-tax cost of debt of 5.5 percent, a cost of preferred stock of 13.5 percent, and a cost of common stock of 18.0 percent, what is the firm's weighted average cost of capital? The firm's weighted average cost of capital is \%. (Round to two decimal places.) Data table (Click on the following icon in order to copy its contents into a spreadsheet.)