Finding the Fourth Proportional to 12,517.86, 17,276.58 and 7,140.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,517.86 : 17,276.58 = 7,140.32 : x
2. Step 2: Convert to fraction form
   12,517.86/17,276.58 = 7,140.32/x
3. Step 3: Cross multiply
   12,517.86x = 17,276.58 × 7,140.32
4. Step 4: Simplify right side
   12,517.86x = 123,360,309.71
5. Step 5: Solve for x
   x = 123,360,309.71/12,517.86
6. Step 6: Final answer
   x = 9,854.74