Finding the Fourth Proportional to 16,061.43, 22,165.39 and 8,987.91

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.43 : 22,165.39 = 8,987.91 : x
2. Step 2: Convert to fraction form
   16,061.43/22,165.39 = 8,987.91/x
3. Step 3: Cross multiply
   16,061.43x = 22,165.39 × 8,987.91
4. Step 4: Simplify right side
   16,061.43x = 199,220,530.43
5. Step 5: Solve for x
   x = 199,220,530.43/16,061.43
6. Step 6: Final answer
   x = 12,403.66