Finding the Fourth Proportional to 6,215.50, 8,575.28 and 4,222.58

Step by Step Solution

1. Step 1: Write the proportion equation
   6,215.50 : 8,575.28 = 4,222.58 : x
2. Step 2: Convert to fraction form
   6,215.50/8,575.28 = 4,222.58/x
3. Step 3: Cross multiply
   6,215.50x = 8,575.28 × 4,222.58
4. Step 4: Simplify right side
   6,215.50x = 36,209,805.82
5. Step 5: Solve for x
   x = 36,209,805.82/6,215.50
6. Step 6: Final answer
   x = 5,825.73