Finding the Fourth Proportional to 17,002.72, 25,519.56 and 8,688.46

Step by Step Solution

1. Step 1: Write the proportion equation
   17,002.72 : 25,519.56 = 8,688.46 : x
2. Step 2: Convert to fraction form
   17,002.72/25,519.56 = 8,688.46/x
3. Step 3: Cross multiply
   17,002.72x = 25,519.56 × 8,688.46
4. Step 4: Simplify right side
   17,002.72x = 221,725,676.28
5. Step 5: Solve for x
   x = 221,725,676.28/17,002.72
6. Step 6: Final answer
   x = 13,040.60