Finding the Fourth Proportional to 9,639.02, 13,302.17 and 5,447.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639.02 : 13,302.17 = 5,447.54 : x
2. Step 2: Convert to fraction form
   9,639.02/13,302.17 = 5,447.54/x
3. Step 3: Cross multiply
   9,639.02x = 13,302.17 × 5,447.54
4. Step 4: Simplify right side
   9,639.02x = 72,464,103.16
5. Step 5: Solve for x
   x = 72,464,103.16/9,639.02
6. Step 6: Final answer
   x = 7,517.79