Finding the Fourth Proportional to 22,631.56, 31,229.00 and 12,557.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,631.56 : 31,229.00 = 12,557.38 : x
2. Step 2: Convert to fraction form
   22,631.56/31,229.00 = 12,557.38/x
3. Step 3: Cross multiply
   22,631.56x = 31,229.00 × 12,557.38
4. Step 4: Simplify right side
   22,631.56x = 392,154,357.23
5. Step 5: Solve for x
   x = 392,154,357.23/22,631.56
6. Step 6: Final answer
   x = 17,327.77