Finding the Fourth Proportional to 22,888.98, 31,588.38 and 12,818.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,888.98 : 31,588.38 = 12,818.25 : x
2. Step 2: Convert to fraction form
   22,888.98/31,588.38 = 12,818.25/x
3. Step 3: Cross multiply
   22,888.98x = 31,588.38 × 12,818.25
4. Step 4: Simplify right side
   22,888.98x = 404,907,751.94
5. Step 5: Solve for x
   x = 404,907,751.94/22,888.98
6. Step 6: Final answer
   x = 17,690.07