Finding the Fourth Proportional to 16,825.42, 25,241.73 and 5,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,825.42 : 25,241.73 = 5,139.50 : x
2. Step 2: Convert to fraction form
   16,825.42/25,241.73 = 5,139.50/x
3. Step 3: Cross multiply
   16,825.42x = 25,241.73 × 5,139.50
4. Step 4: Simplify right side
   16,825.42x = 129,729,871.34
5. Step 5: Solve for x
   x = 129,729,871.34/16,825.42
6. Step 6: Final answer
   x = 7,710.35