Finding the Fourth Proportional to 22,145.90, 30,560.55 and 12,074.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,145.90 : 30,560.55 = 12,074.18 : x
2. Step 2: Convert to fraction form
   22,145.90/30,560.55 = 12,074.18/x
3. Step 3: Cross multiply
   22,145.90x = 30,560.55 × 12,074.18
4. Step 4: Simplify right side
   22,145.90x = 368,993,428.80
5. Step 5: Solve for x
   x = 368,993,428.80/22,145.90
6. Step 6: Final answer
   x = 16,661.93