Finding the Fourth Proportional to 22,146.89, 33,219.18 and 12,170.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,146.89 : 33,219.18 = 12,170.79 : x
2. Step 2: Convert to fraction form
   22,146.89/33,219.18 = 12,170.79/x
3. Step 3: Cross multiply
   22,146.89x = 33,219.18 × 12,170.79
4. Step 4: Simplify right side
   22,146.89x = 404,303,663.75
5. Step 5: Solve for x
   x = 404,303,663.75/22,146.89
6. Step 6: Final answer
   x = 18,255.55