Finding the Fourth Proportional to 6,435.10, 8,880.53 and 3,917.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,435.10 : 8,880.53 = 3,917.32 : x
2. Step 2: Convert to fraction form
   6,435.10/8,880.53 = 3,917.32/x
3. Step 3: Cross multiply
   6,435.10x = 8,880.53 × 3,917.32
4. Step 4: Simplify right side
   6,435.10x = 34,787,877.78
5. Step 5: Solve for x
   x = 34,787,877.78/6,435.10
6. Step 6: Final answer
   x = 5,405.96