Finding the Fourth Proportional to 22,900.98, 31,604.94 and 12,830.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,900.98 : 31,604.94 = 12,830.28 : x
2. Step 2: Convert to fraction form
   22,900.98/31,604.94 = 12,830.28/x
3. Step 3: Cross multiply
   22,900.98x = 31,604.94 × 12,830.28
4. Step 4: Simplify right side
   22,900.98x = 405,500,229.58
5. Step 5: Solve for x
   x = 405,500,229.58/22,900.98
6. Step 6: Final answer
   x = 17,706.68