Finding the Fourth Proportional to 3,921.76, 5,412.72 and 2,350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921.76 : 5,412.72 = 2,350.72 : x
2. Step 2: Convert to fraction form
   3,921.76/5,412.72 = 2,350.72/x
3. Step 3: Cross multiply
   3,921.76x = 5,412.72 × 2,350.72
4. Step 4: Simplify right side
   3,921.76x = 12,723,789.16
5. Step 5: Solve for x
   x = 12,723,789.16/3,921.76
6. Step 6: Final answer
   x = 3,244.41