Finding the Fourth Proportional to 8,451.04, 12,671.76 and 7,072.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,451.04 : 12,671.76 = 7,072.96 : x
2. Step 2: Convert to fraction form
   8,451.04/12,671.76 = 7,072.96/x
3. Step 3: Cross multiply
   8,451.04x = 12,671.76 × 7,072.96
4. Step 4: Simplify right side
   8,451.04x = 89,626,851.61
5. Step 5: Solve for x
   x = 89,626,851.61/8,451.04
6. Step 6: Final answer
   x = 10,605.42