Finding the Fourth Proportional to 17,018.87, 23,479.52 and 12,553.29

Step by Step Solution

1. Step 1: Write the proportion equation
   17,018.87 : 23,479.52 = 12,553.29 : x
2. Step 2: Convert to fraction form
   17,018.87/23,479.52 = 12,553.29/x
3. Step 3: Cross multiply
   17,018.87x = 23,479.52 × 12,553.29
4. Step 4: Simplify right side
   17,018.87x = 294,745,160.85
5. Step 5: Solve for x
   x = 294,745,160.85/17,018.87
6. Step 6: Final answer
   x = 17,318.73