Finding the Fourth Proportional to 9,106.83, 13,644.55 and 4,420.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106.83 : 13,644.55 = 4,420.37 : x
2. Step 2: Convert to fraction form
   9,106.83/13,644.55 = 4,420.37/x
3. Step 3: Cross multiply
   9,106.83x = 13,644.55 × 4,420.37
4. Step 4: Simplify right side
   9,106.83x = 60,313,959.48
5. Step 5: Solve for x
   x = 60,313,959.48/9,106.83
6. Step 6: Final answer
   x = 6,622.94