Finding the Fourth Proportional to 12,571.49, 17,348.09 and 7,538.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,571.49 : 17,348.09 = 7,538.48 : x
2. Step 2: Convert to fraction form
   12,571.49/17,348.09 = 7,538.48/x
3. Step 3: Cross multiply
   12,571.49x = 17,348.09 × 7,538.48
4. Step 4: Simplify right side
   12,571.49x = 130,778,229.50
5. Step 5: Solve for x
   x = 130,778,229.50/12,571.49
6. Step 6: Final answer
   x = 10,402.76