Finding the Fourth Proportional to 12,321.39, 17,003.50 and 7,016.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.39 : 17,003.50 = 7,016.21 : x
2. Step 2: Convert to fraction form
   12,321.39/17,003.50 = 7,016.21/x
3. Step 3: Cross multiply
   12,321.39x = 17,003.50 × 7,016.21
4. Step 4: Simplify right side
   12,321.39x = 119,300,040.12
5. Step 5: Solve for x
   x = 119,300,040.12/12,321.39
6. Step 6: Final answer
   x = 9,682.35