If a firm has a weighted-average cost of capital (WACC) of 7.63%, a required return on debt of 3.311% and a required return on equity of 14.526%, what proportion of the firm's capital structure is equity if the firm pays 31% in taxes? Assume no preferred stock. Enter your answer as a decimal, e.g. 0.3456 for 34.56%, not 34.56.