Finding the Fourth Proportional to 10,836.72, 14,940.72 and 10,689.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,836.72 : 14,940.72 = 10,689.84 : x
2. Step 2: Convert to fraction form
   10,836.72/14,940.72 = 10,689.84/x
3. Step 3: Cross multiply
   10,836.72x = 14,940.72 × 10,689.84
4. Step 4: Simplify right side
   10,836.72x = 159,713,906.28
5. Step 5: Solve for x
   x = 159,713,906.28/10,836.72
6. Step 6: Final answer
   x = 14,738.21