Finding the Fourth Proportional to 20,112.42, 27,754.71 and 11,159.73

Step by Step Solution

1. Step 1: Write the proportion equation
   20,112.42 : 27,754.71 = 11,159.73 : x
2. Step 2: Convert to fraction form
   20,112.42/27,754.71 = 11,159.73/x
3. Step 3: Cross multiply
   20,112.42x = 27,754.71 × 11,159.73
4. Step 4: Simplify right side
   20,112.42x = 309,735,069.83
5. Step 5: Solve for x
   x = 309,735,069.83/20,112.42
6. Step 6: Final answer
   x = 15,400.19