Finding the Fourth Proportional to 16,930.71, 23,349.15 and 10,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,930.71 : 23,349.15 = 10,956.15 : x
2. Step 2: Convert to fraction form
   16,930.71/23,349.15 = 10,956.15/x
3. Step 3: Cross multiply
   16,930.71x = 23,349.15 × 10,956.15
4. Step 4: Simplify right side
   16,930.71x = 255,816,789.77
5. Step 5: Solve for x
   x = 255,816,789.77/16,930.71
6. Step 6: Final answer
   x = 15,109.63