Finding the Fourth Proportional to 7,700.16, 10,613.88 and 5,457.36

Step by Step Solution

1. Step 1: Write the proportion equation
   7,700.16 : 10,613.88 = 5,457.36 : x
2. Step 2: Convert to fraction form
   7,700.16/10,613.88 = 5,457.36/x
3. Step 3: Cross multiply
   7,700.16x = 10,613.88 × 5,457.36
4. Step 4: Simplify right side
   7,700.16x = 57,923,764.16
5. Step 5: Solve for x
   x = 57,923,764.16/7,700.16
6. Step 6: Final answer
   x = 7,522.41