Finding the Fourth Proportional to 17,112.72, 25,631.28 and 10,518.24

Step by Step Solution

1. Step 1: Write the proportion equation
   17,112.72 : 25,631.28 = 10,518.24 : x
2. Step 2: Convert to fraction form
   17,112.72/25,631.28 = 10,518.24/x
3. Step 3: Cross multiply
   17,112.72x = 25,631.28 × 10,518.24
4. Step 4: Simplify right side
   17,112.72x = 269,595,954.55
5. Step 5: Solve for x
   x = 269,595,954.55/17,112.72
6. Step 6: Final answer
   x = 15,754.13