Finding the Fourth Proportional to 12,535.25, 17,299.12 and 7,158.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,535.25 : 17,299.12 = 7,158.56 : x
2. Step 2: Convert to fraction form
   12,535.25/17,299.12 = 7,158.56/x
3. Step 3: Cross multiply
   12,535.25x = 17,299.12 × 7,158.56
4. Step 4: Simplify right side
   12,535.25x = 123,836,748.95
5. Step 5: Solve for x
   x = 123,836,748.95/12,535.25
6. Step 6: Final answer
   x = 9,879.08