Finding the Fourth Proportional to 17,019.37, 23,480.21 and 12,553.79

Step by Step Solution

1. Step 1: Write the proportion equation
   17,019.37 : 23,480.21 = 12,553.79 : x
2. Step 2: Convert to fraction form
   17,019.37/23,480.21 = 12,553.79/x
3. Step 3: Cross multiply
   17,019.37x = 23,480.21 × 12,553.79
4. Step 4: Simplify right side
   17,019.37x = 294,765,562.73
5. Step 5: Solve for x
   x = 294,765,562.73/17,019.37
6. Step 6: Final answer
   x = 17,319.42