Finding the Fourth Proportional to 6,434.72, 8,879.96 and 3,640.22

Step by Step Solution

1. Step 1: Write the proportion equation
   6,434.72 : 8,879.96 = 3,640.22 : x
2. Step 2: Convert to fraction form
   6,434.72/8,879.96 = 3,640.22/x
3. Step 3: Cross multiply
   6,434.72x = 8,879.96 × 3,640.22
4. Step 4: Simplify right side
   6,434.72x = 32,325,007.99
5. Step 5: Solve for x
   x = 32,325,007.99/6,434.72
6. Step 6: Final answer
   x = 5,023.53