Finding the Fourth Proportional to 20,116.42, 27,760.82 and 12,163.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,116.42 : 27,760.82 = 12,163.94 : x
2. Step 2: Convert to fraction form
   20,116.42/27,760.82 = 12,163.94/x
3. Step 3: Cross multiply
   20,116.42x = 27,760.82 × 12,163.94
4. Step 4: Simplify right side
   20,116.42x = 337,680,948.83
5. Step 5: Solve for x
   x = 337,680,948.83/20,116.42
6. Step 6: Final answer
   x = 16,786.33