Finding the Fourth Proportional to 9,648.47, 13,314.87 and 5,456.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.47 : 13,314.87 = 5,456.72 : x
2. Step 2: Convert to fraction form
   9,648.47/13,314.87 = 5,456.72/x
3. Step 3: Cross multiply
   9,648.47x = 13,314.87 × 5,456.72
4. Step 4: Simplify right side
   9,648.47x = 72,655,517.43
5. Step 5: Solve for x
   x = 72,655,517.43/9,648.47
6. Step 6: Final answer
   x = 7,530.26