Finding the Fourth Proportional to 6,222.78, 8,575.61 and 4,451.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,222.78 : 8,575.61 = 4,451.31 : x
2. Step 2: Convert to fraction form
   6,222.78/8,575.61 = 4,451.31/x
3. Step 3: Cross multiply
   6,222.78x = 8,575.61 × 4,451.31
4. Step 4: Simplify right side
   6,222.78x = 38,172,698.55
5. Step 5: Solve for x
   x = 38,172,698.55/6,222.78
6. Step 6: Final answer
   x = 6,134.35