Finding the Fourth Proportional to 6,773.25, 9,347.91 and 3,978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   6,773.25 : 9,347.91 = 3,978.75 : x
2. Step 2: Convert to fraction form
   6,773.25/9,347.91 = 3,978.75/x
3. Step 3: Cross multiply
   6,773.25x = 9,347.91 × 3,978.75
4. Step 4: Simplify right side
   6,773.25x = 37,192,996.91
5. Step 5: Solve for x
   x = 37,192,996.91/6,773.25
6. Step 6: Final answer
   x = 5,491.16