Finding the Fourth Proportional to 20,380.57, 30,567.59 and 5,586.05

Step by Step Solution

1. Step 1: Write the proportion equation
   20,380.57 : 30,567.59 = 5,586.05 : x
2. Step 2: Convert to fraction form
   20,380.57/30,567.59 = 5,586.05/x
3. Step 3: Cross multiply
   20,380.57x = 30,567.59 × 5,586.05
4. Step 4: Simplify right side
   20,380.57x = 170,752,134.61
5. Step 5: Solve for x
   x = 170,752,134.61/20,380.57
6. Step 6: Final answer
   x = 8,378.18