Finding the Fourth Proportional to 3,288.69, 4,505.78 and 3,247.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,288.69 : 4,505.78 = 3,247.72 : x
2. Step 2: Convert to fraction form
   3,288.69/4,505.78 = 3,247.72/x
3. Step 3: Cross multiply
   3,288.69x = 4,505.78 × 3,247.72
4. Step 4: Simplify right side
   3,288.69x = 14,633,508.68
5. Step 5: Solve for x
   x = 14,633,508.68/3,288.69
6. Step 6: Final answer
   x = 4,449.65