Finding the Fourth Proportional to 3,875.88, 5,362.79 and 3,379.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,875.88 : 5,362.79 = 3,379.55 : x
2. Step 2: Convert to fraction form
   3,875.88/5,362.79 = 3,379.55/x
3. Step 3: Cross multiply
   3,875.88x = 5,362.79 × 3,379.55
4. Step 4: Simplify right side
   3,875.88x = 18,123,816.94
5. Step 5: Solve for x
   x = 18,123,816.94/3,875.88
6. Step 6: Final answer
   x = 4,676.05