Finding the Fourth Proportional to 17,072.50, 23,560.15 and 9,519.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,072.50 : 23,560.15 = 9,519.31 : x
2. Step 2: Convert to fraction form
   17,072.50/23,560.15 = 9,519.31/x
3. Step 3: Cross multiply
   17,072.50x = 23,560.15 × 9,519.31
4. Step 4: Simplify right side
   17,072.50x = 224,276,371.50
5. Step 5: Solve for x
   x = 224,276,371.50/17,072.50
6. Step 6: Final answer
   x = 13,136.70