Finding the Fourth Proportional to 8,200.18, 12,290.64 and 3,808.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,200.18 : 12,290.64 = 3,808.38 : x
2. Step 2: Convert to fraction form
   8,200.18/12,290.64 = 3,808.38/x
3. Step 3: Cross multiply
   8,200.18x = 12,290.64 × 3,808.38
4. Step 4: Simplify right side
   8,200.18x = 46,807,427.56
5. Step 5: Solve for x
   x = 46,807,427.56/8,200.18
6. Step 6: Final answer
   x = 5,708.10