Finding the Fourth Proportional to 17,321.50, 25,986.57 and 5,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,321.50 : 25,986.57 = 5,009.50 : x
2. Step 2: Convert to fraction form
   17,321.50/25,986.57 = 5,009.50/x
3. Step 3: Cross multiply
   17,321.50x = 25,986.57 × 5,009.50
4. Step 4: Simplify right side
   17,321.50x = 130,179,722.42
5. Step 5: Solve for x
   x = 130,179,722.42/17,321.50
6. Step 6: Final answer
   x = 7,515.50