Finding the Fourth Proportional to 10,681.27, 16,024.83 and 5,139.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,681.27 : 16,024.83 = 5,139.25 : x
2. Step 2: Convert to fraction form
   10,681.27/16,024.83 = 5,139.25/x
3. Step 3: Cross multiply
   10,681.27x = 16,024.83 × 5,139.25
4. Step 4: Simplify right side
   10,681.27x = 82,355,607.58
5. Step 5: Solve for x
   x = 82,355,607.58/10,681.27
6. Step 6: Final answer
   x = 7,710.28