Finding the Fourth Proportional to 17,328.78, 23,917.42 and 10,951.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,328.78 : 23,917.42 = 10,951.31 : x
2. Step 2: Convert to fraction form
   17,328.78/23,917.42 = 10,951.31/x
3. Step 3: Cross multiply
   17,328.78x = 23,917.42 × 10,951.31
4. Step 4: Simplify right side
   17,328.78x = 261,927,080.82
5. Step 5: Solve for x
   x = 261,927,080.82/17,328.78
6. Step 6: Final answer
   x = 15,115.15