Finding the Fourth Proportional to 22,541.40, 31,106.94 and 12,469.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.40 : 31,106.94 = 12,469.86 : x
2. Step 2: Convert to fraction form
   22,541.40/31,106.94 = 12,469.86/x
3. Step 3: Cross multiply
   22,541.40x = 31,106.94 × 12,469.86
4. Step 4: Simplify right side
   22,541.40x = 387,899,186.83
5. Step 5: Solve for x
   x = 387,899,186.83/22,541.40
6. Step 6: Final answer
   x = 17,208.30