Finding the Fourth Proportional to 12,270.06, 18,310.91 and 10,957.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,270.06 : 18,310.91 = 10,957.86 : x
2. Step 2: Convert to fraction form
   12,270.06/18,310.91 = 10,957.86/x
3. Step 3: Cross multiply
   12,270.06x = 18,310.91 × 10,957.86
4. Step 4: Simplify right side
   12,270.06x = 200,648,333.46
5. Step 5: Solve for x
   x = 200,648,333.46/12,270.06
6. Step 6: Final answer
   x = 16,352.68