Finding the Fourth Proportional to 25,554.79, 38,350.82 and 13,085.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,554.79 : 38,350.82 = 13,085.25 : x
2. Step 2: Convert to fraction form
   25,554.79/38,350.82 = 13,085.25/x
3. Step 3: Cross multiply
   25,554.79x = 38,350.82 × 13,085.25
4. Step 4: Simplify right side
   25,554.79x = 501,830,067.41
5. Step 5: Solve for x
   x = 501,830,067.41/25,554.79
6. Step 6: Final answer
   x = 19,637.42