Finding the Fourth Proportional to 10,993.86, 16,482.96 and 5,147.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.86 : 16,482.96 = 5,147.28 : x
2. Step 2: Convert to fraction form
   10,993.86/16,482.96 = 5,147.28/x
3. Step 3: Cross multiply
   10,993.86x = 16,482.96 × 5,147.28
4. Step 4: Simplify right side
   10,993.86x = 84,842,410.35
5. Step 5: Solve for x
   x = 84,842,410.35/10,993.86
6. Step 6: Final answer
   x = 7,717.25