Finding the Fourth Proportional to 11,969.92, 16,484.16 and 11,931.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,969.92 : 16,484.16 = 11,931.04 : x
2. Step 2: Convert to fraction form
   11,969.92/16,484.16 = 11,931.04/x
3. Step 3: Cross multiply
   11,969.92x = 16,484.16 × 11,931.04
4. Step 4: Simplify right side
   11,969.92x = 196,673,172.33
5. Step 5: Solve for x
   x = 196,673,172.33/11,969.92
6. Step 6: Final answer
   x = 16,430.62