Finding the Fourth Proportional to 12,049.76, 18,072.78 and 3,285.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,049.76 : 18,072.78 = 3,285.38 : x
2. Step 2: Convert to fraction form
   12,049.76/18,072.78 = 3,285.38/x
3. Step 3: Cross multiply
   12,049.76x = 18,072.78 × 3,285.38
4. Step 4: Simplify right side
   12,049.76x = 59,375,949.96
5. Step 5: Solve for x
   x = 59,375,949.96/12,049.76
6. Step 6: Final answer
   x = 4,927.56