Finding the Fourth Proportional to 9,131.96, 13,689.43 and 4,205.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.96 : 13,689.43 = 4,205.54 : x
2. Step 2: Convert to fraction form
   9,131.96/13,689.43 = 4,205.54/x
3. Step 3: Cross multiply
   9,131.96x = 13,689.43 × 4,205.54
4. Step 4: Simplify right side
   9,131.96x = 57,571,469.15
5. Step 5: Solve for x
   x = 57,571,469.15/9,131.96
6. Step 6: Final answer
   x = 6,304.39