Finding the Fourth Proportional to 12,675.72, 17,490.77 and 7,959.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.72 : 17,490.77 = 7,959.09 : x
2. Step 2: Convert to fraction form
   12,675.72/17,490.77 = 7,959.09/x
3. Step 3: Cross multiply
   12,675.72x = 17,490.77 × 7,959.09
4. Step 4: Simplify right side
   12,675.72x = 139,210,668.24
5. Step 5: Solve for x
   x = 139,210,668.24/12,675.72
6. Step 6: Final answer
   x = 10,982.46