Finding the Fourth Proportional to 8,140, 12,202.76 and 2,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,140 : 12,202.76 = 2,944.72 : x
2. Step 2: Convert to fraction form
   8,140/12,202.76 = 2,944.72/x
3. Step 3: Cross multiply
   8,140x = 12,202.76 × 2,944.72
4. Step 4: Simplify right side
   8,140x = 35,933,711.43
5. Step 5: Solve for x
   x = 35,933,711.43/8,140
6. Step 6: Final answer
   x = 4,414.46