Finding the Fourth Proportional to 16,588.27, 22,920.95 and 13,258.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,588.27 : 22,920.95 = 13,258.56 : x
2. Step 2: Convert to fraction form
   16,588.27/22,920.95 = 13,258.56/x
3. Step 3: Cross multiply
   16,588.27x = 22,920.95 × 13,258.56
4. Step 4: Simplify right side
   16,588.27x = 303,898,790.83
5. Step 5: Solve for x
   x = 303,898,790.83/16,588.27
6. Step 6: Final answer
   x = 18,320.10