Finding the Fourth Proportional to 9,105.14, 12,483.11 and 8,939.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.14 : 12,483.11 = 8,939.06 : x
2. Step 2: Convert to fraction form
   9,105.14/12,483.11 = 8,939.06/x
3. Step 3: Cross multiply
   9,105.14x = 12,483.11 × 8,939.06
4. Step 4: Simplify right side
   9,105.14x = 111,587,276.02
5. Step 5: Solve for x
   x = 111,587,276.02/9,105.14
6. Step 6: Final answer
   x = 12,255.41