Finding the Fourth Proportional to 3,882.79, 5,814.87 and 3,415.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,882.79 : 5,814.87 = 3,415.83 : x
2. Step 2: Convert to fraction form
   3,882.79/5,814.87 = 3,415.83/x
3. Step 3: Cross multiply
   3,882.79x = 5,814.87 × 3,415.83
4. Step 4: Simplify right side
   3,882.79x = 19,862,578.32
5. Step 5: Solve for x
   x = 19,862,578.32/3,882.79
6. Step 6: Final answer
   x = 5,115.54