Finding the Fourth Proportional to 12,127.50, 18,191.31 and 3,361.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,127.50 : 18,191.31 = 3,361.79 : x
2. Step 2: Convert to fraction form
   12,127.50/18,191.31 = 3,361.79/x
3. Step 3: Cross multiply
   12,127.50x = 18,191.31 × 3,361.79
4. Step 4: Simplify right side
   12,127.50x = 61,155,273.09
5. Step 5: Solve for x
   x = 61,155,273.09/12,127.50
6. Step 6: Final answer
   x = 5,042.69