Finding the Fourth Proportional to 17,910, 24,715.80 and 12,330.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,910 : 24,715.80 = 12,330.72 : x
2. Step 2: Convert to fraction form
   17,910/24,715.80 = 12,330.72/x
3. Step 3: Cross multiply
   17,910x = 24,715.80 × 12,330.72
4. Step 4: Simplify right side
   17,910x = 304,763,609.38
5. Step 5: Solve for x
   x = 304,763,609.38/17,910
6. Step 6: Final answer
   x = 17,016.39