Finding the Fourth Proportional to 17,012.28, 25,520.34 and 7,149.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,012.28 : 25,520.34 = 7,149.72 : x
2. Step 2: Convert to fraction form
   17,012.28/25,520.34 = 7,149.72/x
3. Step 3: Cross multiply
   17,012.28x = 25,520.34 × 7,149.72
4. Step 4: Simplify right side
   17,012.28x = 182,463,285.30
5. Step 5: Solve for x
   x = 182,463,285.30/17,012.28
6. Step 6: Final answer
   x = 10,725.39