Finding the Fourth Proportional to 10,442.49, 15,667.25 and 3,869.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,442.49 : 15,667.25 = 3,869.21 : x
2. Step 2: Convert to fraction form
   10,442.49/15,667.25 = 3,869.21/x
3. Step 3: Cross multiply
   10,442.49x = 15,667.25 × 3,869.21
4. Step 4: Simplify right side
   10,442.49x = 60,619,782.69
5. Step 5: Solve for x
   x = 60,619,782.69/10,442.49
6. Step 6: Final answer
   x = 5,805.11