Finding the Fourth Proportional to 6,433.50, 8,878.23 and 3,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,433.50 : 8,878.23 = 3,489.50 : x
2. Step 2: Convert to fraction form
   6,433.50/8,878.23 = 3,489.50/x
3. Step 3: Cross multiply
   6,433.50x = 8,878.23 × 3,489.50
4. Step 4: Simplify right side
   6,433.50x = 30,980,583.59
5. Step 5: Solve for x
   x = 30,980,583.59/6,433.50
6. Step 6: Final answer
   x = 4,815.51