Finding the Fourth Proportional to 6,809.41, 9,397.23 and 3,978.58

Step by Step Solution

1. Step 1: Write the proportion equation
   6,809.41 : 9,397.23 = 3,978.58 : x
2. Step 2: Convert to fraction form
   6,809.41/9,397.23 = 3,978.58/x
3. Step 3: Cross multiply
   6,809.41x = 9,397.23 × 3,978.58
4. Step 4: Simplify right side
   6,809.41x = 37,387,631.33
5. Step 5: Solve for x
   x = 37,387,631.33/6,809.41
6. Step 6: Final answer
   x = 5,490.58