Finding the Fourth Proportional to 3,875.81, 5,362.70 and 3,379.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,875.81 : 5,362.70 = 3,379.49 : x
2. Step 2: Convert to fraction form
   3,875.81/5,362.70 = 3,379.49/x
3. Step 3: Cross multiply
   3,875.81x = 5,362.70 × 3,379.49
4. Step 4: Simplify right side
   3,875.81x = 18,123,191.02
5. Step 5: Solve for x
   x = 18,123,191.02/3,875.81
6. Step 6: Final answer
   x = 4,675.98