Finding the Fourth Proportional to 22,590.57, 31,166.85 and 12,654.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,590.57 : 31,166.85 = 12,654.57 : x
2. Step 2: Convert to fraction form
   22,590.57/31,166.85 = 12,654.57/x
3. Step 3: Cross multiply
   22,590.57x = 31,166.85 × 12,654.57
4. Step 4: Simplify right side
   22,590.57x = 394,403,085.00
5. Step 5: Solve for x
   x = 394,403,085.00/22,590.57
6. Step 6: Final answer
   x = 17,458.75