Finding the Fourth Proportional to 6,432.72, 8,877.24 and 3,638.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,432.72 : 8,877.24 = 3,638.28 : x
2. Step 2: Convert to fraction form
   6,432.72/8,877.24 = 3,638.28/x
3. Step 3: Cross multiply
   6,432.72x = 8,877.24 × 3,638.28
4. Step 4: Simplify right side
   6,432.72x = 32,297,884.75
5. Step 5: Solve for x
   x = 32,297,884.75/6,432.72
6. Step 6: Final answer
   x = 5,020.88