Finding the Fourth Proportional to 11,694.78, 17,456.72 and 10,145.66

Step by Step Solution

1. Step 1: Write the proportion equation
   11,694.78 : 17,456.72 = 10,145.66 : x
2. Step 2: Convert to fraction form
   11,694.78/17,456.72 = 10,145.66/x
3. Step 3: Cross multiply
   11,694.78x = 17,456.72 × 10,145.66
4. Step 4: Simplify right side
   11,694.78x = 177,109,807.82
5. Step 5: Solve for x
   x = 177,109,807.82/11,694.78
6. Step 6: Final answer
   x = 15,144.35