Finding the Fourth Proportional to 8,127.67, 12,189.10 and 3,447.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,127.67 : 12,189.10 = 3,447.62 : x
2. Step 2: Convert to fraction form
   8,127.67/12,189.10 = 3,447.62/x
3. Step 3: Cross multiply
   8,127.67x = 12,189.10 × 3,447.62
4. Step 4: Simplify right side
   8,127.67x = 42,023,384.94
5. Step 5: Solve for x
   x = 42,023,384.94/8,127.67
6. Step 6: Final answer
   x = 5,170.41