Finding the Fourth Proportional to 16,061.40, 22,165.35 and 8,987.67

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.40 : 22,165.35 = 8,987.67 : x
2. Step 2: Convert to fraction form
   16,061.40/22,165.35 = 8,987.67/x
3. Step 3: Cross multiply
   16,061.40x = 22,165.35 × 8,987.67
4. Step 4: Simplify right side
   16,061.40x = 199,214,851.23
5. Step 5: Solve for x
   x = 199,214,851.23/16,061.40
6. Step 6: Final answer
   x = 12,403.33