Finding the Fourth Proportional to 9,640.56, 13,304.14 and 5,448.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.56 : 13,304.14 = 5,448.80 : x
2. Step 2: Convert to fraction form
   9,640.56/13,304.14 = 5,448.80/x
3. Step 3: Cross multiply
   9,640.56x = 13,304.14 × 5,448.80
4. Step 4: Simplify right side
   9,640.56x = 72,491,598.03
5. Step 5: Solve for x
   x = 72,491,598.03/9,640.56
6. Step 6: Final answer
   x = 7,519.44