Finding the Fourth Proportional to 12,081.36, 18,118.74 and 3,314.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.36 : 18,118.74 = 3,314.19 : x
2. Step 2: Convert to fraction form
   12,081.36/18,118.74 = 3,314.19/x
3. Step 3: Cross multiply
   12,081.36x = 18,118.74 × 3,314.19
4. Step 4: Simplify right side
   12,081.36x = 60,048,946.92
5. Step 5: Solve for x
   x = 60,048,946.92/12,081.36
6. Step 6: Final answer
   x = 4,970.38