Finding the Fourth Proportional to 10,872.76, 16,314.72 and 5,326

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.76 : 16,314.72 = 5,326 : x
2. Step 2: Convert to fraction form
   10,872.76/16,314.72 = 5,326/x
3. Step 3: Cross multiply
   10,872.76x = 16,314.72 × 5,326
4. Step 4: Simplify right side
   10,872.76x = 86,892,198.72
5. Step 5: Solve for x
   x = 86,892,198.72/10,872.76
6. Step 6: Final answer
   x = 7,991.73