Finding the Fourth Proportional to 16,613.61, 22,926.71 and 9,161.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,613.61 : 22,926.71 = 9,161.61 : x
2. Step 2: Convert to fraction form
   16,613.61/22,926.71 = 9,161.61/x
3. Step 3: Cross multiply
   16,613.61x = 22,926.71 × 9,161.61
4. Step 4: Simplify right side
   16,613.61x = 210,045,529.80
5. Step 5: Solve for x
   x = 210,045,529.80/16,613.61
6. Step 6: Final answer
   x = 12,642.98