Finding the Fourth Proportional to 6,320.31, 8,722.30 and 3,525.81

Step by Step Solution

1. Step 1: Write the proportion equation
   6,320.31 : 8,722.30 = 3,525.81 : x
2. Step 2: Convert to fraction form
   6,320.31/8,722.30 = 3,525.81/x
3. Step 3: Cross multiply
   6,320.31x = 8,722.30 × 3,525.81
4. Step 4: Simplify right side
   6,320.31x = 30,753,172.56
5. Step 5: Solve for x
   x = 30,753,172.56/6,320.31
6. Step 6: Final answer
   x = 4,865.77