Finding the Fourth Proportional to 3,099.72, 4,269.30 and 2,866.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,099.72 : 4,269.30 = 2,866.16 : x
2. Step 2: Convert to fraction form
   3,099.72/4,269.30 = 2,866.16/x
3. Step 3: Cross multiply
   3,099.72x = 4,269.30 × 2,866.16
4. Step 4: Simplify right side
   3,099.72x = 12,236,496.89
5. Step 5: Solve for x
   x = 12,236,496.89/3,099.72
6. Step 6: Final answer
   x = 3,947.61