Finding the Fourth Proportional to 9,641.70, 13,304.61 and 5,449.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,641.70 : 13,304.61 = 5,449.86 : x
2. Step 2: Convert to fraction form
   9,641.70/13,304.61 = 5,449.86/x
3. Step 3: Cross multiply
   9,641.70x = 13,304.61 × 5,449.86
4. Step 4: Simplify right side
   9,641.70x = 72,508,261.85
5. Step 5: Solve for x
   x = 72,508,261.85/9,641.70
6. Step 6: Final answer
   x = 7,520.28