Finding the Fourth Proportional to 10,918.32, 16,352.76 and 8,949.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.32 : 16,352.76 = 8,949.96 : x
2. Step 2: Convert to fraction form
   10,918.32/16,352.76 = 8,949.96/x
3. Step 3: Cross multiply
   10,918.32x = 16,352.76 × 8,949.96
4. Step 4: Simplify right side
   10,918.32x = 146,356,547.89
5. Step 5: Solve for x
   x = 146,356,547.89/10,918.32
6. Step 6: Final answer
   x = 13,404.68