Finding the Fourth Proportional to 16,236.72, 22,406.76 and 8,784.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,236.72 : 22,406.76 = 8,784.72 : x
2. Step 2: Convert to fraction form
   16,236.72/22,406.76 = 8,784.72/x
3. Step 3: Cross multiply
   16,236.72x = 22,406.76 × 8,784.72
4. Step 4: Simplify right side
   16,236.72x = 196,837,112.71
5. Step 5: Solve for x
   x = 196,837,112.71/16,236.72
6. Step 6: Final answer
   x = 12,122.96