Finding the Fourth Proportional to 3,816.48, 5,728.72 and 2,176.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816.48 : 5,728.72 = 2,176.24 : x
2. Step 2: Convert to fraction form
   3,816.48/5,728.72 = 2,176.24/x
3. Step 3: Cross multiply
   3,816.48x = 5,728.72 × 2,176.24
4. Step 4: Simplify right side
   3,816.48x = 12,467,069.61
5. Step 5: Solve for x
   x = 12,467,069.61/3,816.48
6. Step 6: Final answer
   x = 3,266.64