Finding the Fourth Proportional to 17,128.18, 23,648.17 and 11,470.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.18 : 23,648.17 = 11,470.18 : x
2. Step 2: Convert to fraction form
   17,128.18/23,648.17 = 11,470.18/x
3. Step 3: Cross multiply
   17,128.18x = 23,648.17 × 11,470.18
4. Step 4: Simplify right side
   17,128.18x = 271,248,766.57
5. Step 5: Solve for x
   x = 271,248,766.57/17,128.18
6. Step 6: Final answer
   x = 15,836.40