Finding the Fourth Proportional to 12,515.07, 17,268.89 and 7,209.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515.07 : 17,268.89 = 7,209.03 : x
2. Step 2: Convert to fraction form
   12,515.07/17,268.89 = 7,209.03/x
3. Step 3: Cross multiply
   12,515.07x = 17,268.89 × 7,209.03
4. Step 4: Simplify right side
   12,515.07x = 124,491,910.03
5. Step 5: Solve for x
   x = 124,491,910.03/12,515.07
6. Step 6: Final answer
   x = 9,947.36