Finding the Fourth Proportional to 10,086.69, 15,144.08 and 5,159.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.69 : 15,144.08 = 5,159.73 : x
2. Step 2: Convert to fraction form
   10,086.69/15,144.08 = 5,159.73/x
3. Step 3: Cross multiply
   10,086.69x = 15,144.08 × 5,159.73
4. Step 4: Simplify right side
   10,086.69x = 78,139,338.10
5. Step 5: Solve for x
   x = 78,139,338.10/10,086.69
6. Step 6: Final answer
   x = 7,746.78