Finding the Fourth Proportional to 22,590.41, 31,171.81 and 12,518.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,590.41 : 31,171.81 = 12,518.37 : x
2. Step 2: Convert to fraction form
   22,590.41/31,171.81 = 12,518.37/x
3. Step 3: Cross multiply
   22,590.41x = 31,171.81 × 12,518.37
4. Step 4: Simplify right side
   22,590.41x = 390,220,251.15
5. Step 5: Solve for x
   x = 390,220,251.15/22,590.41
6. Step 6: Final answer
   x = 17,273.71