Finding the Fourth Proportional to 22,681.49, 31,301.57 and 12,609.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,681.49 : 31,301.57 = 12,609.72 : x
2. Step 2: Convert to fraction form
   22,681.49/31,301.57 = 12,609.72/x
3. Step 3: Cross multiply
   22,681.49x = 31,301.57 × 12,609.72
4. Step 4: Simplify right side
   22,681.49x = 394,704,064.78
5. Step 5: Solve for x
   x = 394,704,064.78/22,681.49
6. Step 6: Final answer
   x = 17,402.03