Finding the Fourth Proportional to 17,471.20, 26,196.72 and 5,781.28

Step by Step Solution

1. Step 1: Write the proportion equation
   17,471.20 : 26,196.72 = 5,781.28 : x
2. Step 2: Convert to fraction form
   17,471.20/26,196.72 = 5,781.28/x
3. Step 3: Cross multiply
   17,471.20x = 26,196.72 × 5,781.28
4. Step 4: Simplify right side
   17,471.20x = 151,450,573.40
5. Step 5: Solve for x
   x = 151,450,573.40/17,471.20
6. Step 6: Final answer
   x = 8,668.58