Finding the Fourth Proportional to 4,410.72, 6,617.16 and 3,162.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,410.72 : 6,617.16 = 3,162.78 : x
2. Step 2: Convert to fraction form
   4,410.72/6,617.16 = 3,162.78/x
3. Step 3: Cross multiply
   4,410.72x = 6,617.16 × 3,162.78
4. Step 4: Simplify right side
   4,410.72x = 20,928,621.30
5. Step 5: Solve for x
   x = 20,928,621.30/4,410.72
6. Step 6: Final answer
   x = 4,744.94