Finding the Fourth Proportional to 25,851.88, 38,789.34 and 13,537

Step by Step Solution

1. Step 1: Write the proportion equation
   25,851.88 : 38,789.34 = 13,537 : x
2. Step 2: Convert to fraction form
   25,851.88/38,789.34 = 13,537/x
3. Step 3: Cross multiply
   25,851.88x = 38,789.34 × 13,537
4. Step 4: Simplify right side
   25,851.88x = 525,091,295.58
5. Step 5: Solve for x
   x = 525,091,295.58/25,851.88
6. Step 6: Final answer
   x = 20,311.53