Finding the Fourth Proportional to 20,111.83, 27,754.32 and 11,159.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.83 : 27,754.32 = 11,159.34 : x
2. Step 2: Convert to fraction form
   20,111.83/27,754.32 = 11,159.34/x
3. Step 3: Cross multiply
   20,111.83x = 27,754.32 × 11,159.34
4. Step 4: Simplify right side
   20,111.83x = 309,719,831.12
5. Step 5: Solve for x
   x = 309,719,831.12/20,111.83
6. Step 6: Final answer
   x = 15,399.89