Finding the Fourth Proportional to 17,120.26, 25,683.20 and 5,436.28

Step by Step Solution

1. Step 1: Write the proportion equation
   17,120.26 : 25,683.20 = 5,436.28 : x
2. Step 2: Convert to fraction form
   17,120.26/25,683.20 = 5,436.28/x
3. Step 3: Cross multiply
   17,120.26x = 25,683.20 × 5,436.28
4. Step 4: Simplify right side
   17,120.26x = 139,621,066.50
5. Step 5: Solve for x
   x = 139,621,066.50/17,120.26
6. Step 6: Final answer
   x = 8,155.31