Finding the Fourth Proportional to 16,484.81, 22,756.89 and 9,409.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,484.81 : 22,756.89 = 9,409.86 : x
2. Step 2: Convert to fraction form
   16,484.81/22,756.89 = 9,409.86/x
3. Step 3: Cross multiply
   16,484.81x = 22,756.89 × 9,409.86
4. Step 4: Simplify right side
   16,484.81x = 214,139,148.94
5. Step 5: Solve for x
   x = 214,139,148.94/16,484.81
6. Step 6: Final answer
   x = 12,990.09