Finding the Fourth Proportional to 16,815.67, 23,204.27 and 9,742.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,815.67 : 23,204.27 = 9,742.55 : x
2. Step 2: Convert to fraction form
   16,815.67/23,204.27 = 9,742.55/x
3. Step 3: Cross multiply
   16,815.67x = 23,204.27 × 9,742.55
4. Step 4: Simplify right side
   16,815.67x = 226,068,669.02
5. Step 5: Solve for x
   x = 226,068,669.02/16,815.67
6. Step 6: Final answer
   x = 13,443.93