Finding the Fourth Proportional to 11,081.90, 16,608.99 and 5,536.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.90 : 16,608.99 = 5,536.80 : x
2. Step 2: Convert to fraction form
   11,081.90/16,608.99 = 5,536.80/x
3. Step 3: Cross multiply
   11,081.90x = 16,608.99 × 5,536.80
4. Step 4: Simplify right side
   11,081.90x = 91,960,655.83
5. Step 5: Solve for x
   x = 91,960,655.83/11,081.90
6. Step 6: Final answer
   x = 8,298.28