Finding the Fourth Proportional to 16,538.94, 22,824.15 and 8,985.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,538.94 : 22,824.15 = 8,985.18 : x
2. Step 2: Convert to fraction form
   16,538.94/22,824.15 = 8,985.18/x
3. Step 3: Cross multiply
   16,538.94x = 22,824.15 × 8,985.18
4. Step 4: Simplify right side
   16,538.94x = 205,079,096.10
5. Step 5: Solve for x
   x = 205,079,096.10/16,538.94
6. Step 6: Final answer
   x = 12,399.77