Finding the Fourth Proportional to 25,526.72, 35,221.82 and 15,456.09

Step by Step Solution

1. Step 1: Write the proportion equation
   25,526.72 : 35,221.82 = 15,456.09 : x
2. Step 2: Convert to fraction form
   25,526.72/35,221.82 = 15,456.09/x
3. Step 3: Cross multiply
   25,526.72x = 35,221.82 × 15,456.09
4. Step 4: Simplify right side
   25,526.72x = 544,391,542.60
5. Step 5: Solve for x
   x = 544,391,542.60/25,526.72
6. Step 6: Final answer
   x = 21,326.35