Finding the Fourth Proportional to 3,812.28, 5,716.86 and 2,580.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,812.28 : 5,716.86 = 2,580.03 : x
2. Step 2: Convert to fraction form
   3,812.28/5,716.86 = 2,580.03/x
3. Step 3: Cross multiply
   3,812.28x = 5,716.86 × 2,580.03
4. Step 4: Simplify right side
   3,812.28x = 14,749,670.31
5. Step 5: Solve for x
   x = 14,749,670.31/3,812.28
6. Step 6: Final answer
   x = 3,868.99