Finding the Fourth Proportional to 22,868.56, 31,558.56 and 13,442.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,868.56 : 31,558.56 = 13,442.56 : x
2. Step 2: Convert to fraction form
   22,868.56/31,558.56 = 13,442.56/x
3. Step 3: Cross multiply
   22,868.56x = 31,558.56 × 13,442.56
4. Step 4: Simplify right side
   22,868.56x = 424,227,836.31
5. Step 5: Solve for x
   x = 424,227,836.31/22,868.56
6. Step 6: Final answer
   x = 18,550.70