Finding the Fourth Proportional to 10,886.12, 16,326.78 and 5,333.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,886.12 : 16,326.78 = 5,333.96 : x
2. Step 2: Convert to fraction form
   10,886.12/16,326.78 = 5,333.96/x
3. Step 3: Cross multiply
   10,886.12x = 16,326.78 × 5,333.96
4. Step 4: Simplify right side
   10,886.12x = 87,086,391.45
5. Step 5: Solve for x
   x = 87,086,391.45/10,886.12
6. Step 6: Final answer
   x = 7,999.76