Finding the Fourth Proportional to 22,513.91, 31,059.41 and 12,951.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,513.91 : 31,059.41 = 12,951.72 : x
2. Step 2: Convert to fraction form
   22,513.91/31,059.41 = 12,951.72/x
3. Step 3: Cross multiply
   22,513.91x = 31,059.41 × 12,951.72
4. Step 4: Simplify right side
   22,513.91x = 402,272,716.93
5. Step 5: Solve for x
   x = 402,272,716.93/22,513.91
6. Step 6: Final answer
   x = 17,867.75