Finding the Fourth Proportional to 10,086.89, 15,105.65 and 8,709.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.89 : 15,105.65 = 8,709.08 : x
2. Step 2: Convert to fraction form
   10,086.89/15,105.65 = 8,709.08/x
3. Step 3: Cross multiply
   10,086.89x = 15,105.65 × 8,709.08
4. Step 4: Simplify right side
   10,086.89x = 131,556,195.23
5. Step 5: Solve for x
   x = 131,556,195.23/10,086.89
6. Step 6: Final answer
   x = 13,042.30