Finding the Fourth Proportional to 22,147.21, 30,563.39 and 12,075.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,147.21 : 30,563.39 = 12,075.57 : x
2. Step 2: Convert to fraction form
   22,147.21/30,563.39 = 12,075.57/x
3. Step 3: Cross multiply
   22,147.21x = 30,563.39 × 12,075.57
4. Step 4: Simplify right side
   22,147.21x = 369,070,355.38
5. Step 5: Solve for x
   x = 369,070,355.38/22,147.21
6. Step 6: Final answer
   x = 16,664.42