Finding the Fourth Proportional to 2,628.72, 3,936.06 and 2,317.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.72 : 3,936.06 = 2,317.32 : x
2. Step 2: Convert to fraction form
   2,628.72/3,936.06 = 2,317.32/x
3. Step 3: Cross multiply
   2,628.72x = 3,936.06 × 2,317.32
4. Step 4: Simplify right side
   2,628.72x = 9,121,110.56
5. Step 5: Solve for x
   x = 9,121,110.56/2,628.72
6. Step 6: Final answer
   x = 3,469.79