Finding the Fourth Proportional to 12,282.54, 16,945.59 and 9,450.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,282.54 : 16,945.59 = 9,450.78 : x
2. Step 2: Convert to fraction form
   12,282.54/16,945.59 = 9,450.78/x
3. Step 3: Cross multiply
   12,282.54x = 16,945.59 × 9,450.78
4. Step 4: Simplify right side
   12,282.54x = 160,149,043.06
5. Step 5: Solve for x
   x = 160,149,043.06/12,282.54
6. Step 6: Final answer
   x = 13,038.76