Finding the Fourth Proportional to 8,843.07, 12,139.54 and 8,760.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,843.07 : 12,139.54 = 8,760.05 : x
2. Step 2: Convert to fraction form
   8,843.07/12,139.54 = 8,760.05/x
3. Step 3: Cross multiply
   8,843.07x = 12,139.54 × 8,760.05
4. Step 4: Simplify right side
   8,843.07x = 106,342,940.30
5. Step 5: Solve for x
   x = 106,342,940.30/8,843.07
6. Step 6: Final answer
   x = 12,025.56