Finding the Fourth Proportional to 10,786.77, 16,066.19 and 10,306.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,786.77 : 16,066.19 = 10,306.89 : x
2. Step 2: Convert to fraction form
   10,786.77/16,066.19 = 10,306.89/x
3. Step 3: Cross multiply
   10,786.77x = 16,066.19 × 10,306.89
4. Step 4: Simplify right side
   10,786.77x = 165,592,321.18
5. Step 5: Solve for x
   x = 165,592,321.18/10,786.77
6. Step 6: Final answer
   x = 15,351.43