Finding the Fourth Proportional to 9,640.50, 13,304.70 and 5,449.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.50 : 13,304.70 = 5,449.56 : x
2. Step 2: Convert to fraction form
   9,640.50/13,304.70 = 5,449.56/x
3. Step 3: Cross multiply
   9,640.50x = 13,304.70 × 5,449.56
4. Step 4: Simplify right side
   9,640.50x = 72,504,760.93
5. Step 5: Solve for x
   x = 72,504,760.93/9,640.50
6. Step 6: Final answer
   x = 7,520.85