Finding the Fourth Proportional to 6,219.42, 8,581.31 and 3,530.04

Step by Step Solution

1. Step 1: Write the proportion equation
   6,219.42 : 8,581.31 = 3,530.04 : x
2. Step 2: Convert to fraction form
   6,219.42/8,581.31 = 3,530.04/x
3. Step 3: Cross multiply
   6,219.42x = 8,581.31 × 3,530.04
4. Step 4: Simplify right side
   6,219.42x = 30,292,367.55
5. Step 5: Solve for x
   x = 30,292,367.55/6,219.42
6. Step 6: Final answer
   x = 4,870.61