Finding the Fourth Proportional to 8,072.98, 12,111.63 and 3,144.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.98 : 12,111.63 = 3,144.04 : x
2. Step 2: Convert to fraction form
   8,072.98/12,111.63 = 3,144.04/x
3. Step 3: Cross multiply
   8,072.98x = 12,111.63 × 3,144.04
4. Step 4: Simplify right side
   8,072.98x = 38,079,449.19
5. Step 5: Solve for x
   x = 38,079,449.19/8,072.98
6. Step 6: Final answer
   x = 4,716.90