Finding the Fourth Proportional to 13,151.50, 18,149.61 and 7,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.50 : 18,149.61 = 7,562.50 : x
2. Step 2: Convert to fraction form
   13,151.50/18,149.61 = 7,562.50/x
3. Step 3: Cross multiply
   13,151.50x = 18,149.61 × 7,562.50
4. Step 4: Simplify right side
   13,151.50x = 137,256,425.63
5. Step 5: Solve for x
   x = 137,256,425.63/13,151.50
6. Step 6: Final answer
   x = 10,436.56