Finding the Fourth Proportional to 6,424.52, 8,864.76 and 3,906.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,424.52 : 8,864.76 = 3,906.20 : x
2. Step 2: Convert to fraction form
   6,424.52/8,864.76 = 3,906.20/x
3. Step 3: Cross multiply
   6,424.52x = 8,864.76 × 3,906.20
4. Step 4: Simplify right side
   6,424.52x = 34,627,525.51
5. Step 5: Solve for x
   x = 34,627,525.51/6,424.52
6. Step 6: Final answer
   x = 5,389.90