Finding the Fourth Proportional to 22,626.38, 31,228.15 and 12,558.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,626.38 : 31,228.15 = 12,558.05 : x
2. Step 2: Convert to fraction form
   22,626.38/31,228.15 = 12,558.05/x
3. Step 3: Cross multiply
   22,626.38x = 31,228.15 × 12,558.05
4. Step 4: Simplify right side
   22,626.38x = 392,164,669.11
5. Step 5: Solve for x
   x = 392,164,669.11/22,626.38
6. Step 6: Final answer
   x = 17,332.19