Finding the Fourth Proportional to 13,727.31, 20,592.18 and 3,866.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,727.31 : 20,592.18 = 3,866.69 : x
2. Step 2: Convert to fraction form
   13,727.31/20,592.18 = 3,866.69/x
3. Step 3: Cross multiply
   13,727.31x = 20,592.18 × 3,866.69
4. Step 4: Simplify right side
   13,727.31x = 79,623,576.48
5. Step 5: Solve for x
   x = 79,623,576.48/13,727.31
6. Step 6: Final answer
   x = 5,800.38