Finding the Fourth Proportional to 8,003.72, 12,007.12 and 3,072.97

Step by Step Solution

1. Step 1: Write the proportion equation
   8,003.72 : 12,007.12 = 3,072.97 : x
2. Step 2: Convert to fraction form
   8,003.72/12,007.12 = 3,072.97/x
3. Step 3: Cross multiply
   8,003.72x = 12,007.12 × 3,072.97
4. Step 4: Simplify right side
   8,003.72x = 36,897,538.40
5. Step 5: Solve for x
   x = 36,897,538.40/8,003.72
6. Step 6: Final answer
   x = 4,610.05