Finding the Fourth Proportional to 9,648.56, 13,314.84 and 5,456.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.56 : 13,314.84 = 5,456.72 : x
2. Step 2: Convert to fraction form
   9,648.56/13,314.84 = 5,456.72/x
3. Step 3: Cross multiply
   9,648.56x = 13,314.84 × 5,456.72
4. Step 4: Simplify right side
   9,648.56x = 72,655,353.72
5. Step 5: Solve for x
   x = 72,655,353.72/9,648.56
6. Step 6: Final answer
   x = 7,530.18