Finding the Fourth Proportional to 20,111.17, 27,754.06 and 11,159.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.17 : 27,754.06 = 11,159.34 : x
2. Step 2: Convert to fraction form
   20,111.17/27,754.06 = 11,159.34/x
3. Step 3: Cross multiply
   20,111.17x = 27,754.06 × 11,159.34
4. Step 4: Simplify right side
   20,111.17x = 309,716,892.33
5. Step 5: Solve for x
   x = 309,716,892.33/20,111.17
6. Step 6: Final answer
   x = 15,400.24