Finding the Fourth Proportional to 9,711.25, 13,401.54 and 5,519.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,711.25 : 13,401.54 = 5,519.50 : x
2. Step 2: Convert to fraction form
   9,711.25/13,401.54 = 5,519.50/x
3. Step 3: Cross multiply
   9,711.25x = 13,401.54 × 5,519.50
4. Step 4: Simplify right side
   9,711.25x = 73,969,800.03
5. Step 5: Solve for x
   x = 73,969,800.03/9,711.25
6. Step 6: Final answer
   x = 7,616.92