Finding the Fourth Proportional to 20,575.62, 30,853.98 and 8,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,575.62 : 30,853.98 = 8,086.50 : x
2. Step 2: Convert to fraction form
   20,575.62/30,853.98 = 8,086.50/x
3. Step 3: Cross multiply
   20,575.62x = 30,853.98 × 8,086.50
4. Step 4: Simplify right side
   20,575.62x = 249,500,709.27
5. Step 5: Solve for x
   x = 249,500,709.27/20,575.62
6. Step 6: Final answer
   x = 12,126.04