Finding the Fourth Proportional to 12,648.25, 17,455.15 and 7,272.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.25 : 17,455.15 = 7,272.43 : x
2. Step 2: Convert to fraction form
   12,648.25/17,455.15 = 7,272.43/x
3. Step 3: Cross multiply
   12,648.25x = 17,455.15 × 7,272.43
4. Step 4: Simplify right side
   12,648.25x = 126,941,321.97
5. Step 5: Solve for x
   x = 126,941,321.97/12,648.25
6. Step 6: Final answer
   x = 10,036.27