Finding the Fourth Proportional to 8,709.83, 13,073.97 and 5,425.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,709.83 : 13,073.97 = 5,425.25 : x
2. Step 2: Convert to fraction form
   8,709.83/13,073.97 = 5,425.25/x
3. Step 3: Cross multiply
   8,709.83x = 13,073.97 × 5,425.25
4. Step 4: Simplify right side
   8,709.83x = 70,929,490.37
5. Step 5: Solve for x
   x = 70,929,490.37/8,709.83
6. Step 6: Final answer
   x = 8,143.62