Finding the Fourth Proportional to 6,216.53, 8,578.82 and 3,422.03

Step by Step Solution

1. Step 1: Write the proportion equation
   6,216.53 : 8,578.82 = 3,422.03 : x
2. Step 2: Convert to fraction form
   6,216.53/8,578.82 = 3,422.03/x
3. Step 3: Cross multiply
   6,216.53x = 8,578.82 × 3,422.03
4. Step 4: Simplify right side
   6,216.53x = 29,356,979.40
5. Step 5: Solve for x
   x = 29,356,979.40/6,216.53
6. Step 6: Final answer
   x = 4,722.41