Finding the Fourth Proportional to 3,997.20, 5,516.46 and 2,425.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.20 : 5,516.46 = 2,425.08 : x
2. Step 2: Convert to fraction form
   3,997.20/5,516.46 = 2,425.08/x
3. Step 3: Cross multiply
   3,997.20x = 5,516.46 × 2,425.08
4. Step 4: Simplify right side
   3,997.20x = 13,377,856.82
5. Step 5: Solve for x
   x = 13,377,856.82/3,997.20
6. Step 6: Final answer
   x = 3,346.81