Finding the Fourth Proportional to 3,708.72, 5,118.12 and 2,136.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,708.72 : 5,118.12 = 2,136.96 : x
2. Step 2: Convert to fraction form
   3,708.72/5,118.12 = 2,136.96/x
3. Step 3: Cross multiply
   3,708.72x = 5,118.12 × 2,136.96
4. Step 4: Simplify right side
   3,708.72x = 10,937,217.72
5. Step 5: Solve for x
   x = 10,937,217.72/3,708.72
6. Step 6: Final answer
   x = 2,949.05