Finding the Fourth Proportional to 6,443.37, 8,893.23 and 3,926.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.37 : 8,893.23 = 3,926.31 : x
2. Step 2: Convert to fraction form
   6,443.37/8,893.23 = 3,926.31/x
3. Step 3: Cross multiply
   6,443.37x = 8,893.23 × 3,926.31
4. Step 4: Simplify right side
   6,443.37x = 34,917,577.88
5. Step 5: Solve for x
   x = 34,917,577.88/6,443.37
6. Step 6: Final answer
   x = 5,419.15