Finding the Fourth Proportional to 22,541.41, 31,109.47 and 12,981.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.41 : 31,109.47 = 12,981.61 : x
2. Step 2: Convert to fraction form
   22,541.41/31,109.47 = 12,981.61/x
3. Step 3: Cross multiply
   22,541.41x = 31,109.47 × 12,981.61
4. Step 4: Simplify right side
   22,541.41x = 403,850,896.62
5. Step 5: Solve for x
   x = 403,850,896.62/22,541.41
6. Step 6: Final answer
   x = 17,915.96