Finding the Fourth Proportional to 9,696.67, 13,380.61 and 5,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,696.67 : 13,380.61 = 5,447.50 : x
2. Step 2: Convert to fraction form
   9,696.67/13,380.61 = 5,447.50/x
3. Step 3: Cross multiply
   9,696.67x = 13,380.61 × 5,447.50
4. Step 4: Simplify right side
   9,696.67x = 72,890,825.90
5. Step 5: Solve for x
   x = 72,890,825.90/9,696.67
6. Step 6: Final answer
   x = 7,517.10