Finding the Fourth Proportional to 10,993.05, 16,479.86 and 5,148.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.05 : 16,479.86 = 5,148.09 : x
2. Step 2: Convert to fraction form
   10,993.05/16,479.86 = 5,148.09/x
3. Step 3: Cross multiply
   10,993.05x = 16,479.86 × 5,148.09
4. Step 4: Simplify right side
   10,993.05x = 84,839,776.73
5. Step 5: Solve for x
   x = 84,839,776.73/10,993.05
6. Step 6: Final answer
   x = 7,717.58