Finding the Fourth Proportional to 11,016.98, 16,510.88 and 8,081.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,016.98 : 16,510.88 = 8,081.54 : x
2. Step 2: Convert to fraction form
   11,016.98/16,510.88 = 8,081.54/x
3. Step 3: Cross multiply
   11,016.98x = 16,510.88 × 8,081.54
4. Step 4: Simplify right side
   11,016.98x = 133,433,337.16
5. Step 5: Solve for x
   x = 133,433,337.16/11,016.98
6. Step 6: Final answer
   x = 12,111.61