Finding the Fourth Proportional to 3,930.50, 5,427.33 and 3,438.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.50 : 5,427.33 = 3,438.83 : x
2. Step 2: Convert to fraction form
   3,930.50/5,427.33 = 3,438.83/x
3. Step 3: Cross multiply
   3,930.50x = 5,427.33 × 3,438.83
4. Step 4: Simplify right side
   3,930.50x = 18,663,665.22
5. Step 5: Solve for x
   x = 18,663,665.22/3,930.50
6. Step 6: Final answer
   x = 4,748.42