Finding the Fourth Proportional to 10,825.20, 16,237.98 and 3,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,825.20 : 16,237.98 = 3,429.72 : x
2. Step 2: Convert to fraction form
   10,825.20/16,237.98 = 3,429.72/x
3. Step 3: Cross multiply
   10,825.20x = 16,237.98 × 3,429.72
4. Step 4: Simplify right side
   10,825.20x = 55,691,724.77
5. Step 5: Solve for x
   x = 55,691,724.77/10,825.20
6. Step 6: Final answer
   x = 5,144.64