Finding the Fourth Proportional to 5,238.42, 7,229.37 and 2,880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,238.42 : 7,229.37 = 2,880.56 : x
2. Step 2: Convert to fraction form
   5,238.42/7,229.37 = 2,880.56/x
3. Step 3: Cross multiply
   5,238.42x = 7,229.37 × 2,880.56
4. Step 4: Simplify right side
   5,238.42x = 20,824,597.90
5. Step 5: Solve for x
   x = 20,824,597.90/5,238.42
6. Step 6: Final answer
   x = 3,975.36