Finding the Fourth Proportional to 3,708.30, 5,117.31 and 2,136.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,708.30 : 5,117.31 = 2,136.18 : x
2. Step 2: Convert to fraction form
   3,708.30/5,117.31 = 2,136.18/x
3. Step 3: Cross multiply
   3,708.30x = 5,117.31 × 2,136.18
4. Step 4: Simplify right side
   3,708.30x = 10,931,495.28
5. Step 5: Solve for x
   x = 10,931,495.28/3,708.30
6. Step 6: Final answer
   x = 2,947.85