Finding the Fourth Proportional to 22,421, 30,940.98 and 12,995.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,421 : 30,940.98 = 12,995.03 : x
2. Step 2: Convert to fraction form
   22,421/30,940.98 = 12,995.03/x
3. Step 3: Cross multiply
   22,421x = 30,940.98 × 12,995.03
4. Step 4: Simplify right side
   22,421x = 402,078,963.33
5. Step 5: Solve for x
   x = 402,078,963.33/22,421
6. Step 6: Final answer
   x = 17,933.14