Finding the Fourth Proportional to 16,678.43, 25,022.39 and 5,585.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.43 : 25,022.39 = 5,585.79 : x
2. Step 2: Convert to fraction form
   16,678.43/25,022.39 = 5,585.79/x
3. Step 3: Cross multiply
   16,678.43x = 25,022.39 × 5,585.79
4. Step 4: Simplify right side
   16,678.43x = 139,769,787.91
5. Step 5: Solve for x
   x = 139,769,787.91/16,678.43
6. Step 6: Final answer
   x = 8,380.27