Finding the Fourth Proportional to 20,111.13, 27,754.10 and 12,151.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.13 : 27,754.10 = 12,151.82 : x
2. Step 2: Convert to fraction form
   20,111.13/27,754.10 = 12,151.82/x
3. Step 3: Cross multiply
   20,111.13x = 27,754.10 × 12,151.82
4. Step 4: Simplify right side
   20,111.13x = 337,262,627.93
5. Step 5: Solve for x
   x = 337,262,627.93/20,111.13
6. Step 6: Final answer
   x = 16,769.95