Finding the Fourth Proportional to 19,612.78, 27,065.69 and 10,660.27

Step by Step Solution

1. Step 1: Write the proportion equation
   19,612.78 : 27,065.69 = 10,660.27 : x
2. Step 2: Convert to fraction form
   19,612.78/27,065.69 = 10,660.27/x
3. Step 3: Cross multiply
   19,612.78x = 27,065.69 × 10,660.27
4. Step 4: Simplify right side
   19,612.78x = 288,527,442.17
5. Step 5: Solve for x
   x = 288,527,442.17/19,612.78
6. Step 6: Final answer
   x = 14,711.20