Finding the Fourth Proportional to 12,054.42, 18,078.78 and 3,287.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,054.42 : 18,078.78 = 3,287.25 : x
2. Step 2: Convert to fraction form
   12,054.42/18,078.78 = 3,287.25/x
3. Step 3: Cross multiply
   12,054.42x = 18,078.78 × 3,287.25
4. Step 4: Simplify right side
   12,054.42x = 59,429,469.56
5. Step 5: Solve for x
   x = 59,429,469.56/12,054.42
6. Step 6: Final answer
   x = 4,930.10