Finding the Fourth Proportional to 3,708.12, 5,116.56 and 2,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,708.12 : 5,116.56 = 2,136.72 : x
2. Step 2: Convert to fraction form
   3,708.12/5,116.56 = 2,136.72/x
3. Step 3: Cross multiply
   3,708.12x = 5,116.56 × 2,136.72
4. Step 4: Simplify right side
   3,708.12x = 10,932,656.08
5. Step 5: Solve for x
   x = 10,932,656.08/3,708.12
6. Step 6: Final answer
   x = 2,948.30