Finding the Fourth Proportional to 6,443.57, 8,892.81 and 3,611.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.57 : 8,892.81 = 3,611.72 : x
2. Step 2: Convert to fraction form
   6,443.57/8,892.81 = 3,611.72/x
3. Step 3: Cross multiply
   6,443.57x = 8,892.81 × 3,611.72
4. Step 4: Simplify right side
   6,443.57x = 32,118,361.97
5. Step 5: Solve for x
   x = 32,118,361.97/6,443.57
6. Step 6: Final answer
   x = 4,984.56