Finding the Fourth Proportional to 16,778.69, 23,154.75 and 9,225.07

Step by Step Solution

1. Step 1: Write the proportion equation
   16,778.69 : 23,154.75 = 9,225.07 : x
2. Step 2: Convert to fraction form
   16,778.69/23,154.75 = 9,225.07/x
3. Step 3: Cross multiply
   16,778.69x = 23,154.75 × 9,225.07
4. Step 4: Simplify right side
   16,778.69x = 213,604,287.89
5. Step 5: Solve for x
   x = 213,604,287.89/16,778.69
6. Step 6: Final answer
   x = 12,730.69