Finding the Fourth Proportional to 16,059.06, 22,161.78 and 8,985.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,059.06 : 22,161.78 = 8,985.42 : x
2. Step 2: Convert to fraction form
   16,059.06/22,161.78 = 8,985.42/x
3. Step 3: Cross multiply
   16,059.06x = 22,161.78 × 8,985.42
4. Step 4: Simplify right side
   16,059.06x = 199,132,901.25
5. Step 5: Solve for x
   x = 199,132,901.25/16,059.06
6. Step 6: Final answer
   x = 12,400.03