Finding the Fourth Proportional to 12,648.54, 17,455.92 and 7,344.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.54 : 17,455.92 = 7,344.17 : x
2. Step 2: Convert to fraction form
   12,648.54/17,455.92 = 7,344.17/x
3. Step 3: Cross multiply
   12,648.54x = 17,455.92 × 7,344.17
4. Step 4: Simplify right side
   12,648.54x = 128,199,156.71
5. Step 5: Solve for x
   x = 128,199,156.71/12,648.54
6. Step 6: Final answer
   x = 10,135.49