Finding the Fourth Proportional to 16,781.76, 23,158.83 and 9,228.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,781.76 : 23,158.83 = 9,228.57 : x
2. Step 2: Convert to fraction form
   16,781.76/23,158.83 = 9,228.57/x
3. Step 3: Cross multiply
   16,781.76x = 23,158.83 × 9,228.57
4. Step 4: Simplify right side
   16,781.76x = 213,722,883.77
5. Step 5: Solve for x
   x = 213,722,883.77/16,781.76
6. Step 6: Final answer
   x = 12,735.43