Finding the Fourth Proportional to 10,448.38, 15,678.69 and 3,879.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,448.38 : 15,678.69 = 3,879.10 : x
2. Step 2: Convert to fraction form
   10,448.38/15,678.69 = 3,879.10/x
3. Step 3: Cross multiply
   10,448.38x = 15,678.69 × 3,879.10
4. Step 4: Simplify right side
   10,448.38x = 60,819,206.38
5. Step 5: Solve for x
   x = 60,819,206.38/10,448.38
6. Step 6: Final answer
   x = 5,820.92