Finding the Fourth Proportional to 20,454.62, 30,678.52 and 5,665.04

Step by Step Solution

1. Step 1: Write the proportion equation
   20,454.62 : 30,678.52 = 5,665.04 : x
2. Step 2: Convert to fraction form
   20,454.62/30,678.52 = 5,665.04/x
3. Step 3: Cross multiply
   20,454.62x = 30,678.52 × 5,665.04
4. Step 4: Simplify right side
   20,454.62x = 173,795,042.94
5. Step 5: Solve for x
   x = 173,795,042.94/20,454.62
6. Step 6: Final answer
   x = 8,496.62