Finding the Fourth Proportional to 12,012.78, 18,019.12 and 3,247.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012.78 : 18,019.12 = 3,247.69 : x
2. Step 2: Convert to fraction form
   12,012.78/18,019.12 = 3,247.69/x
3. Step 3: Cross multiply
   12,012.78x = 18,019.12 × 3,247.69
4. Step 4: Simplify right side
   12,012.78x = 58,520,470.79
5. Step 5: Solve for x
   x = 58,520,470.79/12,012.78
6. Step 6: Final answer
   x = 4,871.52