Finding the Fourth Proportional to 20,086.86, 27,719.42 and 11,134.28

Step by Step Solution

1. Step 1: Write the proportion equation
   20,086.86 : 27,719.42 = 11,134.28 : x
2. Step 2: Convert to fraction form
   20,086.86/27,719.42 = 11,134.28/x
3. Step 3: Cross multiply
   20,086.86x = 27,719.42 × 11,134.28
4. Step 4: Simplify right side
   20,086.86x = 308,635,783.72
5. Step 5: Solve for x
   x = 308,635,783.72/20,086.86
6. Step 6: Final answer
   x = 15,365.06