Finding the Fourth Proportional to 3,940.83, 5,903.37 and 3,414.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.83 : 5,903.37 = 3,414.78 : x
2. Step 2: Convert to fraction form
   3,940.83/5,903.37 = 3,414.78/x
3. Step 3: Cross multiply
   3,940.83x = 5,903.37 × 3,414.78
4. Step 4: Simplify right side
   3,940.83x = 20,158,709.81
5. Step 5: Solve for x
   x = 20,158,709.81/3,940.83
6. Step 6: Final answer
   x = 5,115.35