Finding the Fourth Proportional to 12,222.78, 16,883.25 and 9,042.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,222.78 : 16,883.25 = 9,042.57 : x
2. Step 2: Convert to fraction form
   12,222.78/16,883.25 = 9,042.57/x
3. Step 3: Cross multiply
   12,222.78x = 16,883.25 × 9,042.57
4. Step 4: Simplify right side
   12,222.78x = 152,667,969.95
5. Step 5: Solve for x
   x = 152,667,969.95/12,222.78
6. Step 6: Final answer
   x = 12,490.45