Finding the Fourth Proportional to 8,010.72, 12,013.92 and 2,813.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,010.72 : 12,013.92 = 2,813.76 : x
2. Step 2: Convert to fraction form
   8,010.72/12,013.92 = 2,813.76/x
3. Step 3: Cross multiply
   8,010.72x = 12,013.92 × 2,813.76
4. Step 4: Simplify right side
   8,010.72x = 33,804,287.54
5. Step 5: Solve for x
   x = 33,804,287.54/8,010.72
6. Step 6: Final answer
   x = 4,219.88