Finding the Fourth Proportional to 9,036.55, 12,457.51 and 7,542.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.55 : 12,457.51 = 7,542.10 : x
2. Step 2: Convert to fraction form
   9,036.55/12,457.51 = 7,542.10/x
3. Step 3: Cross multiply
   9,036.55x = 12,457.51 × 7,542.10
4. Step 4: Simplify right side
   9,036.55x = 93,955,786.17
5. Step 5: Solve for x
   x = 93,955,786.17/9,036.55
6. Step 6: Final answer
   x = 10,397.31