Finding the Fourth Proportional to 3,723.96, 5,138.02 and 2,399.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,723.96 : 5,138.02 = 2,399.34 : x
2. Step 2: Convert to fraction form
   3,723.96/5,138.02 = 2,399.34/x
3. Step 3: Cross multiply
   3,723.96x = 5,138.02 × 2,399.34
4. Step 4: Simplify right side
   3,723.96x = 12,327,856.91
5. Step 5: Solve for x
   x = 12,327,856.91/3,723.96
6. Step 6: Final answer
   x = 3,310.42