Calculating Capital Structure Weights

A firm has the following target capital structure with $12,422 of debt, $5,108 of preferred stock and $12,130 of equity. The after-tax cost of debt is 5.35%, the cost of preferred stock is 10.41% and the cost of common equity is 13.17%. The firm faces a tax rate of 40%. What will be the firms weight on equity capital?

(your answer should be in percentages so 10% would be entered as 10 or 10%)

hint: you need to first find the total amound of invested capital