Finding the Fourth Proportional to 6,174.28, 8,520.69 and 3,815.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,174.28 : 8,520.69 = 3,815.56 : x
2. Step 2: Convert to fraction form
   6,174.28/8,520.69 = 3,815.56/x
3. Step 3: Cross multiply
   6,174.28x = 8,520.69 × 3,815.56
4. Step 4: Simplify right side
   6,174.28x = 32,511,203.94
5. Step 5: Solve for x
   x = 32,511,203.94/6,174.28
6. Step 6: Final answer
   x = 5,265.59