Finding the Fourth Proportional to 8,081.10, 12,116.69 and 3,144.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.10 : 12,116.69 = 3,144.99 : x
2. Step 2: Convert to fraction form
   8,081.10/12,116.69 = 3,144.99/x
3. Step 3: Cross multiply
   8,081.10x = 12,116.69 × 3,144.99
4. Step 4: Simplify right side
   8,081.10x = 38,106,853.16
5. Step 5: Solve for x
   x = 38,106,853.16/8,081.10
6. Step 6: Final answer
   x = 4,715.55