Finding the Fourth Proportional to 17,667.80, 24,403.20 and 13,211.38

Step by Step Solution

1. Step 1: Write the proportion equation
   17,667.80 : 24,403.20 = 13,211.38 : x
2. Step 2: Convert to fraction form
   17,667.80/24,403.20 = 13,211.38/x
3. Step 3: Cross multiply
   17,667.80x = 24,403.20 × 13,211.38
4. Step 4: Simplify right side
   17,667.80x = 322,399,826.40
5. Step 5: Solve for x
   x = 322,399,826.40/17,667.80
6. Step 6: Final answer
   x = 18,247.88