Finding the Fourth Proportional to 6,464.05, 8,919.76 and 3,630.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,464.05 : 8,919.76 = 3,630.78 : x
2. Step 2: Convert to fraction form
   6,464.05/8,919.76 = 3,630.78/x
3. Step 3: Cross multiply
   6,464.05x = 8,919.76 × 3,630.78
4. Step 4: Simplify right side
   6,464.05x = 32,385,688.29
5. Step 5: Solve for x
   x = 32,385,688.29/6,464.05
6. Step 6: Final answer
   x = 5,010.12