Finding the Fourth Proportional to 22,626.72, 31,226.59 and 12,557.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,626.72 : 31,226.59 = 12,557.07 : x
2. Step 2: Convert to fraction form
   22,626.72/31,226.59 = 12,557.07/x
3. Step 3: Cross multiply
   22,626.72x = 31,226.59 × 12,557.07
4. Step 4: Simplify right side
   22,626.72x = 392,114,476.49
5. Step 5: Solve for x
   x = 392,114,476.49/22,626.72
6. Step 6: Final answer
   x = 17,329.71