Finding the Fourth Proportional to 5,238.50, 7,229.13 and 2,880.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,238.50 : 7,229.13 = 2,880.86 : x
2. Step 2: Convert to fraction form
   5,238.50/7,229.13 = 2,880.86/x
3. Step 3: Cross multiply
   5,238.50x = 7,229.13 × 2,880.86
4. Step 4: Simplify right side
   5,238.50x = 20,826,111.45
5. Step 5: Solve for x
   x = 20,826,111.45/5,238.50
6. Step 6: Final answer
   x = 3,975.59