Finding the Fourth Proportional to 10,482.12, 15,715.89 and 3,906.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,482.12 : 15,715.89 = 3,906.54 : x
2. Step 2: Convert to fraction form
   10,482.12/15,715.89 = 3,906.54/x
3. Step 3: Cross multiply
   10,482.12x = 15,715.89 × 3,906.54
4. Step 4: Simplify right side
   10,482.12x = 61,394,752.92
5. Step 5: Solve for x
   x = 61,394,752.92/10,482.12
6. Step 6: Final answer
   x = 5,857.09