Finding the Fourth Proportional to 12,647.52, 17,452.58 and 7,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.52 : 17,452.58 = 7,342.72 : x
2. Step 2: Convert to fraction form
   12,647.52/17,452.58 = 7,342.72/x
3. Step 3: Cross multiply
   12,647.52x = 17,452.58 × 7,342.72
4. Step 4: Simplify right side
   12,647.52x = 128,149,408.22
5. Step 5: Solve for x
   x = 128,149,408.22/12,647.52
6. Step 6: Final answer
   x = 10,132.37