Finding the Fourth Proportional to 10,727.84, 16,082.40 and 8,644.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,727.84 : 16,082.40 = 8,644.16 : x
2. Step 2: Convert to fraction form
   10,727.84/16,082.40 = 8,644.16/x
3. Step 3: Cross multiply
   10,727.84x = 16,082.40 × 8,644.16
4. Step 4: Simplify right side
   10,727.84x = 139,018,838.78
5. Step 5: Solve for x
   x = 139,018,838.78/10,727.84
6. Step 6: Final answer
   x = 12,958.70