Finding the Fourth Proportional to 12,118.40, 18,179.76 and 3,353.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.40 : 18,179.76 = 3,353.12 : x
2. Step 2: Convert to fraction form
   12,118.40/18,179.76 = 3,353.12/x
3. Step 3: Cross multiply
   12,118.40x = 18,179.76 × 3,353.12
4. Step 4: Simplify right side
   12,118.40x = 60,958,916.85
5. Step 5: Solve for x
   x = 60,958,916.85/12,118.40
6. Step 6: Final answer
   x = 5,030.28