Finding the Fourth Proportional to 9,641.56, 13,305.17 and 5,449.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,641.56 : 13,305.17 = 5,449.72 : x
2. Step 2: Convert to fraction form
   9,641.56/13,305.17 = 5,449.72/x
3. Step 3: Cross multiply
   9,641.56x = 13,305.17 × 5,449.72
4. Step 4: Simplify right side
   9,641.56x = 72,509,451.05
5. Step 5: Solve for x
   x = 72,509,451.05/9,641.56
6. Step 6: Final answer
   x = 7,520.51