Finding the Fourth Proportional to 11,098.50, 16,659.16 and 8,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,098.50 : 16,659.16 = 8,659.98 : x
2. Step 2: Convert to fraction form
   11,098.50/16,659.16 = 8,659.98/x
3. Step 3: Cross multiply
   11,098.50x = 16,659.16 × 8,659.98
4. Step 4: Simplify right side
   11,098.50x = 144,267,992.42
5. Step 5: Solve for x
   x = 144,267,992.42/11,098.50
6. Step 6: Final answer
   x = 12,998.87