Finding the Fourth Proportional to 12,205.35, 16,841.39 and 7,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,205.35 : 16,841.39 = 7,168.50 : x
2. Step 2: Convert to fraction form
   12,205.35/16,841.39 = 7,168.50/x
3. Step 3: Cross multiply
   12,205.35x = 16,841.39 × 7,168.50
4. Step 4: Simplify right side
   12,205.35x = 120,727,468.37
5. Step 5: Solve for x
   x = 120,727,468.37/12,205.35
6. Step 6: Final answer
   x = 9,891.36