Finding the Fourth Proportional to 3,895.59, 5,375.89 and 2,127.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,895.59 : 5,375.89 = 2,127.20 : x
2. Step 2: Convert to fraction form
   3,895.59/5,375.89 = 2,127.20/x
3. Step 3: Cross multiply
   3,895.59x = 5,375.89 × 2,127.20
4. Step 4: Simplify right side
   3,895.59x = 11,435,555.69
5. Step 5: Solve for x
   x = 11,435,555.69/3,895.59
6. Step 6: Final answer
   x = 2,935.51