Finding the Fourth Proportional to 6,504.28, 8,976.42 and 3,709.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,504.28 : 8,976.42 = 3,709.72 : x
2. Step 2: Convert to fraction form
   6,504.28/8,976.42 = 3,709.72/x
3. Step 3: Cross multiply
   6,504.28x = 8,976.42 × 3,709.72
4. Step 4: Simplify right side
   6,504.28x = 33,300,004.80
5. Step 5: Solve for x
   x = 33,300,004.80/6,504.28
6. Step 6: Final answer
   x = 5,119.71