Finding the Fourth Proportional to 3,618.27, 4,991.56 and 2,126.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.27 : 4,991.56 = 2,126.16 : x
2. Step 2: Convert to fraction form
   3,618.27/4,991.56 = 2,126.16/x
3. Step 3: Cross multiply
   3,618.27x = 4,991.56 × 2,126.16
4. Step 4: Simplify right side
   3,618.27x = 10,612,849.89
5. Step 5: Solve for x
   x = 10,612,849.89/3,618.27
6. Step 6: Final answer
   x = 2,933.13