Finding the Fourth Proportional to 3,378.31, 5,061.99 and 2,399.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,378.31 : 5,061.99 = 2,399.63 : x
2. Step 2: Convert to fraction form
   3,378.31/5,061.99 = 2,399.63/x
3. Step 3: Cross multiply
   3,378.31x = 5,061.99 × 2,399.63
4. Step 4: Simplify right side
   3,378.31x = 12,146,886.75
5. Step 5: Solve for x
   x = 12,146,886.75/3,378.31
6. Step 6: Final answer
   x = 3,595.55