Finding the Fourth Proportional to 12,469.63, 17,209.68 and 7,165.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.63 : 17,209.68 = 7,165.48 : x
2. Step 2: Convert to fraction form
   12,469.63/17,209.68 = 7,165.48/x
3. Step 3: Cross multiply
   12,469.63x = 17,209.68 × 7,165.48
4. Step 4: Simplify right side
   12,469.63x = 123,315,531.80
5. Step 5: Solve for x
   x = 123,315,531.80/12,469.63
6. Step 6: Final answer
   x = 9,889.27