Finding the Fourth Proportional to 17,719, 26,448.89 and 15,617.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,719 : 26,448.89 = 15,617.18 : x
2. Step 2: Convert to fraction form
   17,719/26,448.89 = 15,617.18/x
3. Step 3: Cross multiply
   17,719x = 26,448.89 × 15,617.18
4. Step 4: Simplify right side
   17,719x = 413,056,997.84
5. Step 5: Solve for x
   x = 413,056,997.84/17,719
6. Step 6: Final answer
   x = 23,311.53