Finding the Fourth Proportional to 8,039.78, 12,061.30 and 2,849.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,039.78 : 12,061.30 = 2,849.30 : x
2. Step 2: Convert to fraction form
   8,039.78/12,061.30 = 2,849.30/x
3. Step 3: Cross multiply
   8,039.78x = 12,061.30 × 2,849.30
4. Step 4: Simplify right side
   8,039.78x = 34,366,262.09
5. Step 5: Solve for x
   x = 34,366,262.09/8,039.78
6. Step 6: Final answer
   x = 4,274.53