Finding the Fourth Proportional to 12,081.43, 18,119.34 and 3,317.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.43 : 18,119.34 = 3,317.05 : x
2. Step 2: Convert to fraction form
   12,081.43/18,119.34 = 3,317.05/x
3. Step 3: Cross multiply
   12,081.43x = 18,119.34 × 3,317.05
4. Step 4: Simplify right side
   12,081.43x = 60,102,756.75
5. Step 5: Solve for x
   x = 60,102,756.75/12,081.43
6. Step 6: Final answer
   x = 4,974.80