Finding the Fourth Proportional to 3,929.82, 5,423.16 and 2,251.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,929.82 : 5,423.16 = 2,251.25 : x
2. Step 2: Convert to fraction form
   3,929.82/5,423.16 = 2,251.25/x
3. Step 3: Cross multiply
   3,929.82x = 5,423.16 × 2,251.25
4. Step 4: Simplify right side
   3,929.82x = 12,208,861.83
5. Step 5: Solve for x
   x = 12,208,861.83/3,929.82
6. Step 6: Final answer
   x = 3,106.72