Finding the Fourth Proportional to 22,535.31, 31,098.67 and 12,971.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,535.31 : 31,098.67 = 12,971.71 : x
2. Step 2: Convert to fraction form
   22,535.31/31,098.67 = 12,971.71/x
3. Step 3: Cross multiply
   22,535.31x = 31,098.67 × 12,971.71
4. Step 4: Simplify right side
   22,535.31x = 403,402,708.27
5. Step 5: Solve for x
   x = 403,402,708.27/22,535.31
6. Step 6: Final answer
   x = 17,900.92