Finding the Fourth Proportional to 6,440.22, 8,865.89 and 5,730.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,440.22 : 8,865.89 = 5,730.96 : x
2. Step 2: Convert to fraction form
   6,440.22/8,865.89 = 5,730.96/x
3. Step 3: Cross multiply
   6,440.22x = 8,865.89 × 5,730.96
4. Step 4: Simplify right side
   6,440.22x = 50,810,032.30
5. Step 5: Solve for x
   x = 50,810,032.30/6,440.22
6. Step 6: Final answer
   x = 7,889.49