Finding the Fourth Proportional to 3,924.72, 5,416.20 and 2,245.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,924.72 : 5,416.20 = 2,245.96 : x
2. Step 2: Convert to fraction form
   3,924.72/5,416.20 = 2,245.96/x
3. Step 3: Cross multiply
   3,924.72x = 5,416.20 × 2,245.96
4. Step 4: Simplify right side
   3,924.72x = 12,164,568.55
5. Step 5: Solve for x
   x = 12,164,568.55/3,924.72
6. Step 6: Final answer
   x = 3,099.47