Finding the Fourth Proportional to 10,828.80, 16,239.15 and 3,806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,828.80 : 16,239.15 = 3,806.10 : x
2. Step 2: Convert to fraction form
   10,828.80/16,239.15 = 3,806.10/x
3. Step 3: Cross multiply
   10,828.80x = 16,239.15 × 3,806.10
4. Step 4: Simplify right side
   10,828.80x = 61,807,828.82
5. Step 5: Solve for x
   x = 61,807,828.82/10,828.80
6. Step 6: Final answer
   x = 5,707.73