Finding the Fourth Proportional to 12,648.15, 17,453.07 and 7,342.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.15 : 17,453.07 = 7,342.11 : x
2. Step 2: Convert to fraction form
   12,648.15/17,453.07 = 7,342.11/x
3. Step 3: Cross multiply
   12,648.15x = 17,453.07 × 7,342.11
4. Step 4: Simplify right side
   12,648.15x = 128,142,359.78
5. Step 5: Solve for x
   x = 128,142,359.78/12,648.15
6. Step 6: Final answer
   x = 10,131.31