Finding the Fourth Proportional to 6,444.31, 8,892.71 and 3,611.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,444.31 : 8,892.71 = 3,611.20 : x
2. Step 2: Convert to fraction form
   6,444.31/8,892.71 = 3,611.20/x
3. Step 3: Cross multiply
   6,444.31x = 8,892.71 × 3,611.20
4. Step 4: Simplify right side
   6,444.31x = 32,113,360.95
5. Step 5: Solve for x
   x = 32,113,360.95/6,444.31
6. Step 6: Final answer
   x = 4,983.21