Finding the Fourth Proportional to 16,591.93, 22,919.25 and 13,258.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,591.93 : 22,919.25 = 13,258.12 : x
2. Step 2: Convert to fraction form
   16,591.93/22,919.25 = 13,258.12/x
3. Step 3: Cross multiply
   16,591.93x = 22,919.25 × 13,258.12
4. Step 4: Simplify right side
   16,591.93x = 303,866,166.81
5. Step 5: Solve for x
   x = 303,866,166.81/16,591.93
6. Step 6: Final answer
   x = 18,314.09