Finding the Fourth Proportional to 25,536.50, 38,340.62 and 13,065.47

Step by Step Solution

1. Step 1: Write the proportion equation
   25,536.50 : 38,340.62 = 13,065.47 : x
2. Step 2: Convert to fraction form
   25,536.50/38,340.62 = 13,065.47/x
3. Step 3: Cross multiply
   25,536.50x = 38,340.62 × 13,065.47
4. Step 4: Simplify right side
   25,536.50x = 500,938,061.35
5. Step 5: Solve for x
   x = 500,938,061.35/25,536.50
6. Step 6: Final answer
   x = 19,616.56