Finding the Fourth Proportional to 9,067.47, 12,518.91 and 8,121.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,067.47 : 12,518.91 = 8,121.59 : x
2. Step 2: Convert to fraction form
   9,067.47/12,518.91 = 8,121.59/x
3. Step 3: Cross multiply
   9,067.47x = 12,518.91 × 8,121.59
4. Step 4: Simplify right side
   9,067.47x = 101,673,391.67
5. Step 5: Solve for x
   x = 101,673,391.67/9,067.47
6. Step 6: Final answer
   x = 11,212.98