Finding the Fourth Proportional to 6,211.74, 8,572.83 and 3,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,211.74 : 8,572.83 = 3,559.50 : x
2. Step 2: Convert to fraction form
   6,211.74/8,572.83 = 3,559.50/x
3. Step 3: Cross multiply
   6,211.74x = 8,572.83 × 3,559.50
4. Step 4: Simplify right side
   6,211.74x = 30,514,988.39
5. Step 5: Solve for x
   x = 30,514,988.39/6,211.74
6. Step 6: Final answer
   x = 4,912.47