Finding the Fourth Proportional to 6,405.67, 8,839.83 and 3,611.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,405.67 : 8,839.83 = 3,611.17 : x
2. Step 2: Convert to fraction form
   6,405.67/8,839.83 = 3,611.17/x
3. Step 3: Cross multiply
   6,405.67x = 8,839.83 × 3,611.17
4. Step 4: Simplify right side
   6,405.67x = 31,922,128.90
5. Step 5: Solve for x
   x = 31,922,128.90/6,405.67
6. Step 6: Final answer
   x = 4,983.42