Finding the Fourth Proportional to 8,491.86, 12,651.71 and 8,073.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,491.86 : 12,651.71 = 8,073.61 : x
2. Step 2: Convert to fraction form
   8,491.86/12,651.71 = 8,073.61/x
3. Step 3: Cross multiply
   8,491.86x = 12,651.71 × 8,073.61
4. Step 4: Simplify right side
   8,491.86x = 102,144,900.38
5. Step 5: Solve for x
   x = 102,144,900.38/8,491.86
6. Step 6: Final answer
   x = 12,028.57