Finding the Fourth Proportional to 3,860.41, 5,786.10 and 3,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.41 : 5,786.10 = 3,422.50 : x
2. Step 2: Convert to fraction form
   3,860.41/5,786.10 = 3,422.50/x
3. Step 3: Cross multiply
   3,860.41x = 5,786.10 × 3,422.50
4. Step 4: Simplify right side
   3,860.41x = 19,802,929.06
5. Step 5: Solve for x
   x = 19,802,929.06/3,860.41
6. Step 6: Final answer
   x = 5,129.74