Finding the Fourth Proportional to 9,696.71, 13,381.71 and 5,447.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,696.71 : 13,381.71 = 5,447.45 : x
2. Step 2: Convert to fraction form
   9,696.71/13,381.71 = 5,447.45/x
3. Step 3: Cross multiply
   9,696.71x = 13,381.71 × 5,447.45
4. Step 4: Simplify right side
   9,696.71x = 72,896,209.17
5. Step 5: Solve for x
   x = 72,896,209.17/9,696.71
6. Step 6: Final answer
   x = 7,517.62