Finding the Fourth Proportional to 22,218.89, 30,661.97 and 12,147.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,218.89 : 30,661.97 = 12,147.33 : x
2. Step 2: Convert to fraction form
   22,218.89/30,661.97 = 12,147.33/x
3. Step 3: Cross multiply
   22,218.89x = 30,661.97 × 12,147.33
4. Step 4: Simplify right side
   22,218.89x = 372,461,007.30
5. Step 5: Solve for x
   x = 372,461,007.30/22,218.89
6. Step 6: Final answer
   x = 16,763.26