Finding the Fourth Proportional to 16,212.78, 22,373.58 and 8,760.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,212.78 : 22,373.58 = 8,760.78 : x
2. Step 2: Convert to fraction form
   16,212.78/22,373.58 = 8,760.78/x
3. Step 3: Cross multiply
   16,212.78x = 22,373.58 × 8,760.78
4. Step 4: Simplify right side
   16,212.78x = 196,010,012.19
5. Step 5: Solve for x
   x = 196,010,012.19/16,212.78
6. Step 6: Final answer
   x = 12,089.85