Finding the Fourth Proportional to 3,216.78, 4,439.34 and 2,429.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,216.78 : 4,439.34 = 2,429.46 : x
2. Step 2: Convert to fraction form
   3,216.78/4,439.34 = 2,429.46/x
3. Step 3: Cross multiply
   3,216.78x = 4,439.34 × 2,429.46
4. Step 4: Simplify right side
   3,216.78x = 10,785,198.96
5. Step 5: Solve for x
   x = 10,785,198.96/3,216.78
6. Step 6: Final answer
   x = 3,352.79