Finding the Fourth Proportional to 12,078.76, 18,116.04 and 3,194.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.76 : 18,116.04 = 3,194.18 : x
2. Step 2: Convert to fraction form
   12,078.76/18,116.04 = 3,194.18/x
3. Step 3: Cross multiply
   12,078.76x = 18,116.04 × 3,194.18
4. Step 4: Simplify right side
   12,078.76x = 57,865,892.65
5. Step 5: Solve for x
   x = 57,865,892.65/12,078.76
6. Step 6: Final answer
   x = 4,790.72