Finding the Fourth Proportional to 3,897.96, 5,855.54 and 3,379.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.96 : 5,855.54 = 3,379.56 : x
2. Step 2: Convert to fraction form
   3,897.96/5,855.54 = 3,379.56/x
3. Step 3: Cross multiply
   3,897.96x = 5,855.54 × 3,379.56
4. Step 4: Simplify right side
   3,897.96x = 19,789,148.76
5. Step 5: Solve for x
   x = 19,789,148.76/3,897.96
6. Step 6: Final answer
   x = 5,076.80