Finding the Fourth Proportional to 10,819.27, 16,217.76 and 7,850.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,819.27 : 16,217.76 = 7,850.31 : x
2. Step 2: Convert to fraction form
   10,819.27/16,217.76 = 7,850.31/x
3. Step 3: Cross multiply
   10,819.27x = 16,217.76 × 7,850.31
4. Step 4: Simplify right side
   10,819.27x = 127,314,443.51
5. Step 5: Solve for x
   x = 127,314,443.51/10,819.27
6. Step 6: Final answer
   x = 11,767.38