Finding the Fourth Proportional to 20,081.69, 27,708.74 and 12,124.35

Step by Step Solution

1. Step 1: Write the proportion equation
   20,081.69 : 27,708.74 = 12,124.35 : x
2. Step 2: Convert to fraction form
   20,081.69/27,708.74 = 12,124.35/x
3. Step 3: Cross multiply
   20,081.69x = 27,708.74 × 12,124.35
4. Step 4: Simplify right side
   20,081.69x = 335,950,596.04
5. Step 5: Solve for x
   x = 335,950,596.04/20,081.69
6. Step 6: Final answer
   x = 16,729.20