Finding the Fourth Proportional to 12,119.78, 18,179.69 and 3,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,119.78 : 18,179.69 = 3,354.72 : x
2. Step 2: Convert to fraction form
   12,119.78/18,179.69 = 3,354.72/x
3. Step 3: Cross multiply
   12,119.78x = 18,179.69 × 3,354.72
4. Step 4: Simplify right side
   12,119.78x = 60,987,703.56
5. Step 5: Solve for x
   x = 60,987,703.56/12,119.78
6. Step 6: Final answer
   x = 5,032.08