Finding the Fourth Proportional to 17,128, 23,638.56 and 9,676.48

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128 : 23,638.56 = 9,676.48 : x
2. Step 2: Convert to fraction form
   17,128/23,638.56 = 9,676.48/x
3. Step 3: Cross multiply
   17,128x = 23,638.56 × 9,676.48
4. Step 4: Simplify right side
   17,128x = 228,738,053.07
5. Step 5: Solve for x
   x = 228,738,053.07/17,128
6. Step 6: Final answer
   x = 13,354.63