Finding the Fourth Proportional to 2,716.72, 4,066.98 and 2,670.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,716.72 : 4,066.98 = 2,670.28 : x
2. Step 2: Convert to fraction form
   2,716.72/4,066.98 = 2,670.28/x
3. Step 3: Cross multiply
   2,716.72x = 4,066.98 × 2,670.28
4. Step 4: Simplify right side
   2,716.72x = 10,859,975.35
5. Step 5: Solve for x
   x = 10,859,975.35/2,716.72
6. Step 6: Final answer
   x = 3,997.46