Finding the Fourth Proportional to 6,443, 8,891.34 and 3,499

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443 : 8,891.34 = 3,499 : x
2. Step 2: Convert to fraction form
   6,443/8,891.34 = 3,499/x
3. Step 3: Cross multiply
   6,443x = 8,891.34 × 3,499
4. Step 4: Simplify right side
   6,443x = 31,110,798.66
5. Step 5: Solve for x
   x = 31,110,798.66/6,443
6. Step 6: Final answer
   x = 4,828.62