Finding the Fourth Proportional to 5,222.71, 7,207.32 and 2,864.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.71 : 7,207.32 = 2,864.86 : x
2. Step 2: Convert to fraction form
   5,222.71/7,207.32 = 2,864.86/x
3. Step 3: Cross multiply
   5,222.71x = 7,207.32 × 2,864.86
4. Step 4: Simplify right side
   5,222.71x = 20,647,962.78
5. Step 5: Solve for x
   x = 20,647,962.78/5,222.71
6. Step 6: Final answer
   x = 3,953.50