Finding the Fourth Proportional to 16,539, 22,823.55 and 8,985.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,539 : 22,823.55 = 8,985.42 : x
2. Step 2: Convert to fraction form
   16,539/22,823.55 = 8,985.42/x
3. Step 3: Cross multiply
   16,539x = 22,823.55 × 8,985.42
4. Step 4: Simplify right side
   16,539x = 205,079,182.64
5. Step 5: Solve for x
   x = 205,079,182.64/16,539
6. Step 6: Final answer
   x = 12,399.73