Finding the Fourth Proportional to 16,854.40, 23,258.89 and 9,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,854.40 : 23,258.89 = 9,300.88 : x
2. Step 2: Convert to fraction form
   16,854.40/23,258.89 = 9,300.88/x
3. Step 3: Cross multiply
   16,854.40x = 23,258.89 × 9,300.88
4. Step 4: Simplify right side
   16,854.40x = 216,328,063.42
5. Step 5: Solve for x
   x = 216,328,063.42/16,854.40
6. Step 6: Final answer
   x = 12,835.11