Finding the Fourth Proportional to 12,111.82, 16,718.57 and 8,928.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.82 : 16,718.57 = 8,928.82 : x
2. Step 2: Convert to fraction form
   12,111.82/16,718.57 = 8,928.82/x
3. Step 3: Cross multiply
   12,111.82x = 16,718.57 × 8,928.82
4. Step 4: Simplify right side
   12,111.82x = 149,277,102.19
5. Step 5: Solve for x
   x = 149,277,102.19/12,111.82
6. Step 6: Final answer
   x = 12,324.91