Finding the Fourth Proportional to 3,930.56, 5,423.82 and 2,162.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.56 : 5,423.82 = 2,162.24 : x
2. Step 2: Convert to fraction form
   3,930.56/5,423.82 = 2,162.24/x
3. Step 3: Cross multiply
   3,930.56x = 5,423.82 × 2,162.24
4. Step 4: Simplify right side
   3,930.56x = 11,727,600.56
5. Step 5: Solve for x
   x = 11,727,600.56/3,930.56
6. Step 6: Final answer
   x = 2,983.70