Finding the Fourth Proportional to 17,057.94, 25,553.01 and 13,342.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,057.94 : 25,553.01 = 13,342.80 : x
2. Step 2: Convert to fraction form
   17,057.94/25,553.01 = 13,342.80/x
3. Step 3: Cross multiply
   17,057.94x = 25,553.01 × 13,342.80
4. Step 4: Simplify right side
   17,057.94x = 340,948,701.83
5. Step 5: Solve for x
   x = 340,948,701.83/17,057.94
6. Step 6: Final answer
   x = 19,987.68