Finding the Fourth Proportional to 22,957.86, 31,679.42 and 12,887.41

Step by Step Solution

1. Step 1: Write the proportion equation
   22,957.86 : 31,679.42 = 12,887.41 : x
2. Step 2: Convert to fraction form
   22,957.86/31,679.42 = 12,887.41/x
3. Step 3: Cross multiply
   22,957.86x = 31,679.42 × 12,887.41
4. Step 4: Simplify right side
   22,957.86x = 408,265,674.10
5. Step 5: Solve for x
   x = 408,265,674.10/22,957.86
6. Step 6: Final answer
   x = 17,783.26