Finding the Fourth Proportional to 9,086.85, 12,540.89 and 5,054.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.85 : 12,540.89 = 5,054.09 : x
2. Step 2: Convert to fraction form
   9,086.85/12,540.89 = 5,054.09/x
3. Step 3: Cross multiply
   9,086.85x = 12,540.89 × 5,054.09
4. Step 4: Simplify right side
   9,086.85x = 63,382,736.67
5. Step 5: Solve for x
   x = 63,382,736.67/9,086.85
6. Step 6: Final answer
   x = 6,975.22