Finding the Fourth Proportional to 10,436.82, 15,651.12 and 3,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.82 : 15,651.12 = 3,858.50 : x
2. Step 2: Convert to fraction form
   10,436.82/15,651.12 = 3,858.50/x
3. Step 3: Cross multiply
   10,436.82x = 15,651.12 × 3,858.50
4. Step 4: Simplify right side
   10,436.82x = 60,389,768.26
5. Step 5: Solve for x
   x = 60,389,768.26/10,436.82
6. Step 6: Final answer
   x = 5,786.22