Finding the Fourth Proportional to 13,122.52, 18,108.42 and 7,456.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122.52 : 18,108.42 = 7,456.52 : x
2. Step 2: Convert to fraction form
   13,122.52/18,108.42 = 7,456.52/x
3. Step 3: Cross multiply
   13,122.52x = 18,108.42 × 7,456.52
4. Step 4: Simplify right side
   13,122.52x = 135,025,795.90
5. Step 5: Solve for x
   x = 135,025,795.90/13,122.52
6. Step 6: Final answer
   x = 10,289.62