Finding the Fourth Proportional to 12,575.11, 17,355.15 and 7,542.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,575.11 : 17,355.15 = 7,542.10 : x
2. Step 2: Convert to fraction form
   12,575.11/17,355.15 = 7,542.10/x
3. Step 3: Cross multiply
   12,575.11x = 17,355.15 × 7,542.10
4. Step 4: Simplify right side
   12,575.11x = 130,894,190.04
5. Step 5: Solve for x
   x = 130,894,190.04/12,575.11
6. Step 6: Final answer
   x = 10,408.99