Finding the Fourth Proportional to 10,722.18, 16,108 and 10,279.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.18 : 16,108 = 10,279.32 : x
2. Step 2: Convert to fraction form
   10,722.18/16,108 = 10,279.32/x
3. Step 3: Cross multiply
   10,722.18x = 16,108 × 10,279.32
4. Step 4: Simplify right side
   10,722.18x = 165,579,286.56
5. Step 5: Solve for x
   x = 165,579,286.56/10,722.18
6. Step 6: Final answer
   x = 15,442.69