Finding the Fourth Proportional to 16,813.40, 23,201.59 and 9,258.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,813.40 : 23,201.59 = 9,258.25 : x
2. Step 2: Convert to fraction form
   16,813.40/23,201.59 = 9,258.25/x
3. Step 3: Cross multiply
   16,813.40x = 23,201.59 × 9,258.25
4. Step 4: Simplify right side
   16,813.40x = 214,806,139.55
5. Step 5: Solve for x
   x = 214,806,139.55/16,813.40
6. Step 6: Final answer
   x = 12,775.89