Finding the Fourth Proportional to 6,397.60, 9,606.82 and 3,947.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,397.60 : 9,606.82 = 3,947.98 : x
2. Step 2: Convert to fraction form
   6,397.60/9,606.82 = 3,947.98/x
3. Step 3: Cross multiply
   6,397.60x = 9,606.82 × 3,947.98
4. Step 4: Simplify right side
   6,397.60x = 37,927,533.22
5. Step 5: Solve for x
   x = 37,927,533.22/6,397.60
6. Step 6: Final answer
   x = 5,928.40