Finding the Fourth Proportional to 10,806.86, 16,202.41 and 7,288.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,806.86 : 16,202.41 = 7,288.12 : x
2. Step 2: Convert to fraction form
   10,806.86/16,202.41 = 7,288.12/x
3. Step 3: Cross multiply
   10,806.86x = 16,202.41 × 7,288.12
4. Step 4: Simplify right side
   10,806.86x = 118,085,108.37
5. Step 5: Solve for x
   x = 118,085,108.37/10,806.86
6. Step 6: Final answer
   x = 10,926.87