Finding the Fourth Proportional to 10,881, 16,296.19 and 10,581.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881 : 16,296.19 = 10,581.69 : x
2. Step 2: Convert to fraction form
   10,881/16,296.19 = 10,581.69/x
3. Step 3: Cross multiply
   10,881x = 16,296.19 × 10,581.69
4. Step 4: Simplify right side
   10,881x = 172,441,265.42
5. Step 5: Solve for x
   x = 172,441,265.42/10,881
6. Step 6: Final answer
   x = 15,847.92