Finding the Fourth Proportional to 16,109.78, 22,230.36 and 8,940.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.78 : 22,230.36 = 8,940.06 : x
2. Step 2: Convert to fraction form
   16,109.78/22,230.36 = 8,940.06/x
3. Step 3: Cross multiply
   16,109.78x = 22,230.36 × 8,940.06
4. Step 4: Simplify right side
   16,109.78x = 198,740,835.59
5. Step 5: Solve for x
   x = 198,740,835.59/16,109.78
6. Step 6: Final answer
   x = 12,336.66