Finding the Fourth Proportional to 11,660.50, 17,490.72 and 10,055.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,660.50 : 17,490.72 = 10,055.09 : x
2. Step 2: Convert to fraction form
   11,660.50/17,490.72 = 10,055.09/x
3. Step 3: Cross multiply
   11,660.50x = 17,490.72 × 10,055.09
4. Step 4: Simplify right side
   11,660.50x = 175,870,763.76
5. Step 5: Solve for x
   x = 175,870,763.76/11,660.50
6. Step 6: Final answer
   x = 15,082.62