Finding the Fourth Proportional to 3,886.42, 5,820.48 and 3,379.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.42 : 5,820.48 = 3,379.62 : x
2. Step 2: Convert to fraction form
   3,886.42/5,820.48 = 3,379.62/x
3. Step 3: Cross multiply
   3,886.42x = 5,820.48 × 3,379.62
4. Step 4: Simplify right side
   3,886.42x = 19,671,010.62
5. Step 5: Solve for x
   x = 19,671,010.62/3,886.42
6. Step 6: Final answer
   x = 5,061.47