Finding the Fourth Proportional to 12,081.24, 18,121.32 and 3,316.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.24 : 18,121.32 = 3,316.16 : x
2. Step 2: Convert to fraction form
   12,081.24/18,121.32 = 3,316.16/x
3. Step 3: Cross multiply
   12,081.24x = 18,121.32 × 3,316.16
4. Step 4: Simplify right side
   12,081.24x = 60,093,241.83
5. Step 5: Solve for x
   x = 60,093,241.83/12,081.24
6. Step 6: Final answer
   x = 4,974.10