Finding the Fourth Proportional to 3,707.22, 5,116.42 and 2,215.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,707.22 : 5,116.42 = 2,215.13 : x
2. Step 2: Convert to fraction form
   3,707.22/5,116.42 = 2,215.13/x
3. Step 3: Cross multiply
   3,707.22x = 5,116.42 × 2,215.13
4. Step 4: Simplify right side
   3,707.22x = 11,333,535.43
5. Step 5: Solve for x
   x = 11,333,535.43/3,707.22
6. Step 6: Final answer
   x = 3,057.15