Finding the Fourth Proportional to 20,155.42, 27,785.18 and 14,086.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,155.42 : 27,785.18 = 14,086.82 : x
2. Step 2: Convert to fraction form
   20,155.42/27,785.18 = 14,086.82/x
3. Step 3: Cross multiply
   20,155.42x = 27,785.18 × 14,086.82
4. Step 4: Simplify right side
   20,155.42x = 391,404,829.33
5. Step 5: Solve for x
   x = 391,404,829.33/20,155.42
6. Step 6: Final answer
   x = 19,419.33