Finding the Fourth Proportional to 16,818.69, 23,041.72 and 16,188.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,818.69 : 23,041.72 = 16,188.10 : x
2. Step 2: Convert to fraction form
   16,818.69/23,041.72 = 16,188.10/x
3. Step 3: Cross multiply
   16,818.69x = 23,041.72 × 16,188.10
4. Step 4: Simplify right side
   16,818.69x = 373,001,668.71
5. Step 5: Solve for x
   x = 373,001,668.71/16,818.69
6. Step 6: Final answer
   x = 22,177.81