Finding the Fourth Proportional to 10,825.49, 16,238.70 and 3,429.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,825.49 : 16,238.70 = 3,429.79 : x
2. Step 2: Convert to fraction form
   10,825.49/16,238.70 = 3,429.79/x
3. Step 3: Cross multiply
   10,825.49x = 16,238.70 × 3,429.79
4. Step 4: Simplify right side
   10,825.49x = 55,695,290.28
5. Step 5: Solve for x
   x = 55,695,290.28/10,825.49
6. Step 6: Final answer
   x = 5,144.83