Finding the Fourth Proportional to 20,635.98, 30,932.79 and 8,150.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,635.98 : 30,932.79 = 8,150.94 : x
2. Step 2: Convert to fraction form
   20,635.98/30,932.79 = 8,150.94/x
3. Step 3: Cross multiply
   20,635.98x = 30,932.79 × 8,150.94
4. Step 4: Simplify right side
   20,635.98x = 252,131,315.32
5. Step 5: Solve for x
   x = 252,131,315.32/20,635.98
6. Step 6: Final answer
   x = 12,218.04