Finding the Fourth Proportional to 3,816.62, 5,263.99 and 2,557.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816.62 : 5,263.99 = 2,557.27 : x
2. Step 2: Convert to fraction form
   3,816.62/5,263.99 = 2,557.27/x
3. Step 3: Cross multiply
   3,816.62x = 5,263.99 × 2,557.27
4. Step 4: Simplify right side
   3,816.62x = 13,461,443.89
5. Step 5: Solve for x
   x = 13,461,443.89/3,816.62
6. Step 6: Final answer
   x = 3,527.06