Finding the Fourth Proportional to 13,819.05, 20,731.76 and 3,958.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,819.05 : 20,731.76 = 3,958.41 : x
2. Step 2: Convert to fraction form
   13,819.05/20,731.76 = 3,958.41/x
3. Step 3: Cross multiply
   13,819.05x = 20,731.76 × 3,958.41
4. Step 4: Simplify right side
   13,819.05x = 82,064,786.31
5. Step 5: Solve for x
   x = 82,064,786.31/13,819.05
6. Step 6: Final answer
   x = 5,938.53