Finding the Fourth Proportional to 16,389.74, 22,609.86 and 10,722.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,389.74 : 22,609.86 = 10,722.18 : x
2. Step 2: Convert to fraction form
   16,389.74/22,609.86 = 10,722.18/x
3. Step 3: Cross multiply
   16,389.74x = 22,609.86 × 10,722.18
4. Step 4: Simplify right side
   16,389.74x = 242,426,988.69
5. Step 5: Solve for x
   x = 242,426,988.69/16,389.74
6. Step 6: Final answer
   x = 14,791.39