Finding the Fourth Proportional to 10,722.56, 16,061.79 and 5,159.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.56 : 16,061.79 = 5,159.48 : x
2. Step 2: Convert to fraction form
   10,722.56/16,061.79 = 5,159.48/x
3. Step 3: Cross multiply
   10,722.56x = 16,061.79 × 5,159.48
4. Step 4: Simplify right side
   10,722.56x = 82,870,484.27
5. Step 5: Solve for x
   x = 82,870,484.27/10,722.56
6. Step 6: Final answer
   x = 7,728.61