Finding the Fourth Proportional to 22,389.50, 30,897.69 and 12,453.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.50 : 30,897.69 = 12,453.50 : x
2. Step 2: Convert to fraction form
   22,389.50/30,897.69 = 12,453.50/x
3. Step 3: Cross multiply
   22,389.50x = 30,897.69 × 12,453.50
4. Step 4: Simplify right side
   22,389.50x = 384,784,382.42
5. Step 5: Solve for x
   x = 384,784,382.42/22,389.50
6. Step 6: Final answer
   x = 17,185.93