Finding the Fourth Proportional to 16,086.93, 22,200.78 and 8,917.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,086.93 : 22,200.78 = 8,917.61 : x
2. Step 2: Convert to fraction form
   16,086.93/22,200.78 = 8,917.61/x
3. Step 3: Cross multiply
   16,086.93x = 22,200.78 × 8,917.61
4. Step 4: Simplify right side
   16,086.93x = 197,977,820.17
5. Step 5: Solve for x
   x = 197,977,820.17/16,086.93
6. Step 6: Final answer
   x = 12,306.75