Finding the Fourth Proportional to 6,209.79, 8,570.24 and 3,558.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,209.79 : 8,570.24 = 3,558.05 : x
2. Step 2: Convert to fraction form
   6,209.79/8,570.24 = 3,558.05/x
3. Step 3: Cross multiply
   6,209.79x = 8,570.24 × 3,558.05
4. Step 4: Simplify right side
   6,209.79x = 30,493,342.43
5. Step 5: Solve for x
   x = 30,493,342.43/6,209.79
6. Step 6: Final answer
   x = 4,910.53