Finding the Fourth Proportional to 6,443.91, 8,893.22 and 3,611.77

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.91 : 8,893.22 = 3,611.77 : x
2. Step 2: Convert to fraction form
   6,443.91/8,893.22 = 3,611.77/x
3. Step 3: Cross multiply
   6,443.91x = 8,893.22 × 3,611.77
4. Step 4: Simplify right side
   6,443.91x = 32,120,220.73
5. Step 5: Solve for x
   x = 32,120,220.73/6,443.91
6. Step 6: Final answer
   x = 4,984.59