Finding the Fourth Proportional to 17,113.38, 25,643.61 and 13,356.25

Step by Step Solution

1. Step 1: Write the proportion equation
   17,113.38 : 25,643.61 = 13,356.25 : x
2. Step 2: Convert to fraction form
   17,113.38/25,643.61 = 13,356.25/x
3. Step 3: Cross multiply
   17,113.38x = 25,643.61 × 13,356.25
4. Step 4: Simplify right side
   17,113.38x = 342,502,530.17
5. Step 5: Solve for x
   x = 342,502,530.17/17,113.38
6. Step 6: Final answer
   x = 20,013.73