Finding the Fourth Proportional to 12,637.27, 18,955.86 and 3,871.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,637.27 : 18,955.86 = 3,871.05 : x
2. Step 2: Convert to fraction form
   12,637.27/18,955.86 = 3,871.05/x
3. Step 3: Cross multiply
   12,637.27x = 18,955.86 × 3,871.05
4. Step 4: Simplify right side
   12,637.27x = 73,379,081.85
5. Step 5: Solve for x
   x = 73,379,081.85/12,637.27
6. Step 6: Final answer
   x = 5,806.56