Finding the Fourth Proportional to 6,354.28, 8,765.94 and 3,997.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,354.28 : 8,765.94 = 3,997.72 : x
2. Step 2: Convert to fraction form
   6,354.28/8,765.94 = 3,997.72/x
3. Step 3: Cross multiply
   6,354.28x = 8,765.94 × 3,997.72
4. Step 4: Simplify right side
   6,354.28x = 35,043,773.66
5. Step 5: Solve for x
   x = 35,043,773.66/6,354.28
6. Step 6: Final answer
   x = 5,514.99