Finding the Fourth Proportional to 17,238.62, 23,790.31 and 12,982.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,238.62 : 23,790.31 = 12,982.18 : x
2. Step 2: Convert to fraction form
   17,238.62/23,790.31 = 12,982.18/x
3. Step 3: Cross multiply
   17,238.62x = 23,790.31 × 12,982.18
4. Step 4: Simplify right side
   17,238.62x = 308,849,967.72
5. Step 5: Solve for x
   x = 308,849,967.72/17,238.62
6. Step 6: Final answer
   x = 17,916.17