Finding the Fourth Proportional to 20,245.96, 30,366.69 and 5,456.35

Step by Step Solution

1. Step 1: Write the proportion equation
   20,245.96 : 30,366.69 = 5,456.35 : x
2. Step 2: Convert to fraction form
   20,245.96/30,366.69 = 5,456.35/x
3. Step 3: Cross multiply
   20,245.96x = 30,366.69 × 5,456.35
4. Step 4: Simplify right side
   20,245.96x = 165,691,288.98
5. Step 5: Solve for x
   x = 165,691,288.98/20,245.96
6. Step 6: Final answer
   x = 8,183.92