Finding the Fourth Proportional to 6,209.84, 8,569.72 and 3,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,209.84 : 8,569.72 = 3,557.50 : x
2. Step 2: Convert to fraction form
   6,209.84/8,569.72 = 3,557.50/x
3. Step 3: Cross multiply
   6,209.84x = 8,569.72 × 3,557.50
4. Step 4: Simplify right side
   6,209.84x = 30,486,778.90
5. Step 5: Solve for x
   x = 30,486,778.90/6,209.84
6. Step 6: Final answer
   x = 4,909.43