Finding the Fourth Proportional to 10,425.82, 14,387.81 and 5,709.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,425.82 : 14,387.81 = 5,709.80 : x
2. Step 2: Convert to fraction form
   10,425.82/14,387.81 = 5,709.80/x
3. Step 3: Cross multiply
   10,425.82x = 14,387.81 × 5,709.80
4. Step 4: Simplify right side
   10,425.82x = 82,151,517.54
5. Step 5: Solve for x
   x = 82,151,517.54/10,425.82
6. Step 6: Final answer
   x = 7,879.62