Finding the Fourth Proportional to 6,780.38, 9,356.82 and 3,796.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,780.38 : 9,356.82 = 3,796.21 : x
2. Step 2: Convert to fraction form
   6,780.38/9,356.82 = 3,796.21/x
3. Step 3: Cross multiply
   6,780.38x = 9,356.82 × 3,796.21
4. Step 4: Simplify right side
   6,780.38x = 35,520,430.26
5. Step 5: Solve for x
   x = 35,520,430.26/6,780.38
6. Step 6: Final answer
   x = 5,238.71