Finding the Fourth Proportional to 22,258.95, 30,717.15 and 12,187.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,258.95 : 30,717.15 = 12,187.31 : x
2. Step 2: Convert to fraction form
   22,258.95/30,717.15 = 12,187.31/x
3. Step 3: Cross multiply
   22,258.95x = 30,717.15 × 12,187.31
4. Step 4: Simplify right side
   22,258.95x = 374,359,275.78
5. Step 5: Solve for x
   x = 374,359,275.78/22,258.95
6. Step 6: Final answer
   x = 16,818.37