Finding the Fourth Proportional to 10,923.05, 16,339.61 and 9,991.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,923.05 : 16,339.61 = 9,991.82 : x
2. Step 2: Convert to fraction form
   10,923.05/16,339.61 = 9,991.82/x
3. Step 3: Cross multiply
   10,923.05x = 16,339.61 × 9,991.82
4. Step 4: Simplify right side
   10,923.05x = 163,262,310.33
5. Step 5: Solve for x
   x = 163,262,310.33/10,923.05
6. Step 6: Final answer
   x = 14,946.59