Finding the Fourth Proportional to 7,159.86, 10,729.89 and 5,169.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,159.86 : 10,729.89 = 5,169.62 : x
2. Step 2: Convert to fraction form
   7,159.86/10,729.89 = 5,169.62/x
3. Step 3: Cross multiply
   7,159.86x = 10,729.89 × 5,169.62
4. Step 4: Simplify right side
   7,159.86x = 55,469,453.94
5. Step 5: Solve for x
   x = 55,469,453.94/7,159.86
6. Step 6: Final answer
   x = 7,747.28