Finding the Fourth Proportional to 21,955.98, 30,296.43 and 12,523.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,955.98 : 30,296.43 = 12,523.98 : x
2. Step 2: Convert to fraction form
   21,955.98/30,296.43 = 12,523.98/x
3. Step 3: Cross multiply
   21,955.98x = 30,296.43 × 12,523.98
4. Step 4: Simplify right side
   21,955.98x = 379,431,883.39
5. Step 5: Solve for x
   x = 379,431,883.39/21,955.98
6. Step 6: Final answer
   x = 17,281.48