Finding the Fourth Proportional to 22,401.78, 30,914.88 and 12,975.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,401.78 : 30,914.88 = 12,975.80 : x
2. Step 2: Convert to fraction form
   22,401.78/30,914.88 = 12,975.80/x
3. Step 3: Cross multiply
   22,401.78x = 30,914.88 × 12,975.80
4. Step 4: Simplify right side
   22,401.78x = 401,145,299.90
5. Step 5: Solve for x
   x = 401,145,299.90/22,401.78
6. Step 6: Final answer
   x = 17,906.85