Finding the Fourth Proportional to 22,218.50, 30,661.52 and 12,146.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,218.50 : 30,661.52 = 12,146.99 : x
2. Step 2: Convert to fraction form
   22,218.50/30,661.52 = 12,146.99/x
3. Step 3: Cross multiply
   22,218.50x = 30,661.52 × 12,146.99
4. Step 4: Simplify right side
   22,218.50x = 372,445,023.52
5. Step 5: Solve for x
   x = 372,445,023.52/22,218.50
6. Step 6: Final answer
   x = 16,762.83