Finding the Fourth Proportional to 12,750.72, 17,596.77 and 7,085.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,750.72 : 17,596.77 = 7,085.51 : x
2. Step 2: Convert to fraction form
   12,750.72/17,596.77 = 7,085.51/x
3. Step 3: Cross multiply
   12,750.72x = 17,596.77 × 7,085.51
4. Step 4: Simplify right side
   12,750.72x = 124,682,001.82
5. Step 5: Solve for x
   x = 124,682,001.82/12,750.72
6. Step 6: Final answer
   x = 9,778.43