Finding the Fourth Proportional to 9,708.72, 13,399.26 and 5,516.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,708.72 : 13,399.26 = 5,516.16 : x
2. Step 2: Convert to fraction form
   9,708.72/13,399.26 = 5,516.16/x
3. Step 3: Cross multiply
   9,708.72x = 13,399.26 × 5,516.16
4. Step 4: Simplify right side
   9,708.72x = 73,912,462.04
5. Step 5: Solve for x
   x = 73,912,462.04/9,708.72
6. Step 6: Final answer
   x = 7,613.00