Finding the Fourth Proportional to 5,600.55, 7,728.78 and 3,082.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,600.55 : 7,728.78 = 3,082.91 : x
2. Step 2: Convert to fraction form
   5,600.55/7,728.78 = 3,082.91/x
3. Step 3: Cross multiply
   5,600.55x = 7,728.78 × 3,082.91
4. Step 4: Simplify right side
   5,600.55x = 23,827,113.83
5. Step 5: Solve for x
   x = 23,827,113.83/5,600.55
6. Step 6: Final answer
   x = 4,254.43