Finding the Fourth Proportional to 16,222.71, 22,387.68 and 9,513.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,222.71 : 22,387.68 = 9,513.48 : x
2. Step 2: Convert to fraction form
   16,222.71/22,387.68 = 9,513.48/x
3. Step 3: Cross multiply
   16,222.71x = 22,387.68 × 9,513.48
4. Step 4: Simplify right side
   16,222.71x = 212,984,745.93
5. Step 5: Solve for x
   x = 212,984,745.93/16,222.71
6. Step 6: Final answer
   x = 13,128.80