Finding the Fourth Proportional to 3,993.06, 5,510.10 and 2,399.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.06 : 5,510.10 = 2,399.79 : x
2. Step 2: Convert to fraction form
   3,993.06/5,510.10 = 2,399.79/x
3. Step 3: Cross multiply
   3,993.06x = 5,510.10 × 2,399.79
4. Step 4: Simplify right side
   3,993.06x = 13,223,082.88
5. Step 5: Solve for x
   x = 13,223,082.88/3,993.06
6. Step 6: Final answer
   x = 3,311.52