Finding the Fourth Proportional to 9,664.56, 13,336.92 and 5,472.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,664.56 : 13,336.92 = 5,472.72 : x
2. Step 2: Convert to fraction form
   9,664.56/13,336.92 = 5,472.72/x
3. Step 3: Cross multiply
   9,664.56x = 13,336.92 × 5,472.72
4. Step 4: Simplify right side
   9,664.56x = 72,989,228.82
5. Step 5: Solve for x
   x = 72,989,228.82/9,664.56
6. Step 6: Final answer
   x = 7,552.26