Finding the Fourth Proportional to 13,425.09, 18,525.61 and 7,456.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,425.09 : 18,525.61 = 7,456.25 : x
2. Step 2: Convert to fraction form
   13,425.09/18,525.61 = 7,456.25/x
3. Step 3: Cross multiply
   13,425.09x = 18,525.61 × 7,456.25
4. Step 4: Simplify right side
   13,425.09x = 138,131,635.20
5. Step 5: Solve for x
   x = 138,131,635.20/13,425.09
6. Step 6: Final answer
   x = 10,289.06