Finding the Fourth Proportional to 6,443.99, 8,892.60 and 3,611.36

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.99 : 8,892.60 = 3,611.36 : x
2. Step 2: Convert to fraction form
   6,443.99/8,892.60 = 3,611.36/x
3. Step 3: Cross multiply
   6,443.99x = 8,892.60 × 3,611.36
4. Step 4: Simplify right side
   6,443.99x = 32,114,335.47
5. Step 5: Solve for x
   x = 32,114,335.47/6,443.99
6. Step 6: Final answer
   x = 4,983.61