Finding the Fourth Proportional to 17,272.80, 23,835.72 and 9,719

Step by Step Solution

1. Step 1: Write the proportion equation
   17,272.80 : 23,835.72 = 9,719 : x
2. Step 2: Convert to fraction form
   17,272.80/23,835.72 = 9,719/x
3. Step 3: Cross multiply
   17,272.80x = 23,835.72 × 9,719
4. Step 4: Simplify right side
   17,272.80x = 231,659,362.68
5. Step 5: Solve for x
   x = 231,659,362.68/17,272.80
6. Step 6: Final answer
   x = 13,411.80