Finding the Fourth Proportional to 8,137.42, 12,209.34 and 3,458.44

Step by Step Solution

1. Step 1: Write the proportion equation
   8,137.42 : 12,209.34 = 3,458.44 : x
2. Step 2: Convert to fraction form
   8,137.42/12,209.34 = 3,458.44/x
3. Step 3: Cross multiply
   8,137.42x = 12,209.34 × 3,458.44
4. Step 4: Simplify right side
   8,137.42x = 42,225,269.83
5. Step 5: Solve for x
   x = 42,225,269.83/8,137.42
6. Step 6: Final answer
   x = 5,189.02