Finding the Fourth Proportional to 11,978.29, 16,530.55 and 6,673.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.29 : 16,530.55 = 6,673.10 : x
2. Step 2: Convert to fraction form
   11,978.29/16,530.55 = 6,673.10/x
3. Step 3: Cross multiply
   11,978.29x = 16,530.55 × 6,673.10
4. Step 4: Simplify right side
   11,978.29x = 110,310,013.21
5. Step 5: Solve for x
   x = 110,310,013.21/11,978.29
6. Step 6: Final answer
   x = 9,209.16