Finding the Fourth Proportional to 3,930.46, 5,423.83 and 2,251.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.46 : 5,423.83 = 2,251.78 : x
2. Step 2: Convert to fraction form
   3,930.46/5,423.83 = 2,251.78/x
3. Step 3: Cross multiply
   3,930.46x = 5,423.83 × 2,251.78
4. Step 4: Simplify right side
   3,930.46x = 12,213,271.92
5. Step 5: Solve for x
   x = 12,213,271.92/3,930.46
6. Step 6: Final answer
   x = 3,107.34