Finding the Fourth Proportional to 4,288.32, 6,426.72 and 3,183.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,288.32 : 6,426.72 = 3,183.96 : x
2. Step 2: Convert to fraction form
   4,288.32/6,426.72 = 3,183.96/x
3. Step 3: Cross multiply
   4,288.32x = 6,426.72 × 3,183.96
4. Step 4: Simplify right side
   4,288.32x = 20,462,419.41
5. Step 5: Solve for x
   x = 20,462,419.41/4,288.32
6. Step 6: Final answer
   x = 4,771.66