Finding the Fourth Proportional to 12,020.33, 18,031.40 and 3,255.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.33 : 18,031.40 = 3,255.09 : x
2. Step 2: Convert to fraction form
   12,020.33/18,031.40 = 3,255.09/x
3. Step 3: Cross multiply
   12,020.33x = 18,031.40 × 3,255.09
4. Step 4: Simplify right side
   12,020.33x = 58,693,813.55
5. Step 5: Solve for x
   x = 58,693,813.55/12,020.33
6. Step 6: Final answer
   x = 4,882.88