Finding the Fourth Proportional to 3,912.76, 5,399.16 and 2,233.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,912.76 : 5,399.16 = 2,233.60 : x
2. Step 2: Convert to fraction form
   3,912.76/5,399.16 = 2,233.60/x
3. Step 3: Cross multiply
   3,912.76x = 5,399.16 × 2,233.60
4. Step 4: Simplify right side
   3,912.76x = 12,059,563.78
5. Step 5: Solve for x
   x = 12,059,563.78/3,912.76
6. Step 6: Final answer
   x = 3,082.11