Finding the Fourth Proportional to 14,287.05, 21,428.15 and 3,896.37

Step by Step Solution

1. Step 1: Write the proportion equation
   14,287.05 : 21,428.15 = 3,896.37 : x
2. Step 2: Convert to fraction form
   14,287.05/21,428.15 = 3,896.37/x
3. Step 3: Cross multiply
   14,287.05x = 21,428.15 × 3,896.37
4. Step 4: Simplify right side
   14,287.05x = 83,491,981.33
5. Step 5: Solve for x
   x = 83,491,981.33/14,287.05
6. Step 6: Final answer
   x = 5,843.89