Finding the Fourth Proportional to 16,206.72, 24,274.81 and 7,869.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,206.72 : 24,274.81 = 7,869.21 : x
2. Step 2: Convert to fraction form
   16,206.72/24,274.81 = 7,869.21/x
3. Step 3: Cross multiply
   16,206.72x = 24,274.81 × 7,869.21
4. Step 4: Simplify right side
   16,206.72x = 191,023,577.60
5. Step 5: Solve for x
   x = 191,023,577.60/16,206.72
6. Step 6: Final answer
   x = 11,786.69