Finding the Fourth Proportional to 9,712.08, 13,401.72 and 5,519.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,712.08 : 13,401.72 = 5,519.52 : x
2. Step 2: Convert to fraction form
   9,712.08/13,401.72 = 5,519.52/x
3. Step 3: Cross multiply
   9,712.08x = 13,401.72 × 5,519.52
4. Step 4: Simplify right side
   9,712.08x = 73,971,061.57
5. Step 5: Solve for x
   x = 73,971,061.57/9,712.08
6. Step 6: Final answer
   x = 7,616.40