Finding the Fourth Proportional to 17,880.78, 24,680.02 and 12,217.82

Step by Step Solution

1. Step 1: Write the proportion equation
   17,880.78 : 24,680.02 = 12,217.82 : x
2. Step 2: Convert to fraction form
   17,880.78/24,680.02 = 12,217.82/x
3. Step 3: Cross multiply
   17,880.78x = 24,680.02 × 12,217.82
4. Step 4: Simplify right side
   17,880.78x = 301,536,015.38
5. Step 5: Solve for x
   x = 301,536,015.38/17,880.78
6. Step 6: Final answer
   x = 16,863.69