Finding the Fourth Proportional to 22,888, 31,587.33 and 12,818.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,888 : 31,587.33 = 12,818.76 : x
2. Step 2: Convert to fraction form
   22,888/31,587.33 = 12,818.76/x
3. Step 3: Cross multiply
   22,888x = 31,587.33 × 12,818.76
4. Step 4: Simplify right side
   22,888x = 404,910,402.31
5. Step 5: Solve for x
   x = 404,910,402.31/22,888
6. Step 6: Final answer
   x = 17,690.95