Finding the Fourth Proportional to 16,061.76, 22,165.20 and 8,988.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.76 : 22,165.20 = 8,988.12 : x
2. Step 2: Convert to fraction form
   16,061.76/22,165.20 = 8,988.12/x
3. Step 3: Cross multiply
   16,061.76x = 22,165.20 × 8,988.12
4. Step 4: Simplify right side
   16,061.76x = 199,223,477.42
5. Step 5: Solve for x
   x = 199,223,477.42/16,061.76
6. Step 6: Final answer
   x = 12,403.59