Finding the Fourth Proportional to 10,081.59, 15,123.99 and 2,686.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.59 : 15,123.99 = 2,686.65 : x
2. Step 2: Convert to fraction form
   10,081.59/15,123.99 = 2,686.65/x
3. Step 3: Cross multiply
   10,081.59x = 15,123.99 × 2,686.65
4. Step 4: Simplify right side
   10,081.59x = 40,632,867.73
5. Step 5: Solve for x
   x = 40,632,867.73/10,081.59
6. Step 6: Final answer
   x = 4,030.40