Finding the Fourth Proportional to 17,404.88, 26,109.72 and 5,719.28

Step by Step Solution

1. Step 1: Write the proportion equation
   17,404.88 : 26,109.72 = 5,719.28 : x
2. Step 2: Convert to fraction form
   17,404.88/26,109.72 = 5,719.28/x
3. Step 3: Cross multiply
   17,404.88x = 26,109.72 × 5,719.28
4. Step 4: Simplify right side
   17,404.88x = 149,328,799.40
5. Step 5: Solve for x
   x = 149,328,799.40/17,404.88
6. Step 6: Final answer
   x = 8,579.71