Finding the Fourth Proportional to 10,933, 16,403.12 and 5,390.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,933 : 16,403.12 = 5,390.16 : x
2. Step 2: Convert to fraction form
   10,933/16,403.12 = 5,390.16/x
3. Step 3: Cross multiply
   10,933x = 16,403.12 × 5,390.16
4. Step 4: Simplify right side
   10,933x = 88,415,441.30
5. Step 5: Solve for x
   x = 88,415,441.30/10,933
6. Step 6: Final answer
   x = 8,087.02