Finding the Fourth Proportional to 17,138.49, 23,651.49 and 12,111.58

Step by Step Solution

1. Step 1: Write the proportion equation
   17,138.49 : 23,651.49 = 12,111.58 : x
2. Step 2: Convert to fraction form
   17,138.49/23,651.49 = 12,111.58/x
3. Step 3: Cross multiply
   17,138.49x = 23,651.49 × 12,111.58
4. Step 4: Simplify right side
   17,138.49x = 286,456,855.20
5. Step 5: Solve for x
   x = 286,456,855.20/17,138.49
6. Step 6: Final answer
   x = 16,714.24