Finding the Fourth Proportional to 3,144.96, 4,709.16 and 2,215.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.96 : 4,709.16 = 2,215.47 : x
2. Step 2: Convert to fraction form
   3,144.96/4,709.16 = 2,215.47/x
3. Step 3: Cross multiply
   3,144.96x = 4,709.16 × 2,215.47
4. Step 4: Simplify right side
   3,144.96x = 10,433,002.71
5. Step 5: Solve for x
   x = 10,433,002.71/3,144.96
6. Step 6: Final answer
   x = 3,317.37