Finding the Fourth Proportional to 11,978.32, 16,530.04 and 6,673.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.32 : 16,530.04 = 6,673.20 : x
2. Step 2: Convert to fraction form
   11,978.32/16,530.04 = 6,673.20/x
3. Step 3: Cross multiply
   11,978.32x = 16,530.04 × 6,673.20
4. Step 4: Simplify right side
   11,978.32x = 110,308,262.93
5. Step 5: Solve for x
   x = 110,308,262.93/11,978.32
6. Step 6: Final answer
   x = 9,208.99