To convert the repeating decimal \( 0.264\overline{6} \) to a rational number, you would set \( x \) equal to \( 0.264\overline{6} \).
In this case, the decimal repeats every 1 digit (the digit "6"). To eliminate the repeating part, you should multiply both sides of the equation by 10 (because there is one repeating digit).
So the answer is:
10