Finding the Fourth Proportional to 6,215.47, 8,578.50 and 3,562.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,215.47 : 8,578.50 = 3,562.90 : x
2. Step 2: Convert to fraction form
   6,215.47/8,578.50 = 3,562.90/x
3. Step 3: Cross multiply
   6,215.47x = 8,578.50 × 3,562.90
4. Step 4: Simplify right side
   6,215.47x = 30,564,337.65
5. Step 5: Solve for x
   x = 30,564,337.65/6,215.47
6. Step 6: Final answer
   x = 4,917.46