Finding the Fourth Proportional to 16,905.46, 23,301.58 and 12,706.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,905.46 : 23,301.58 = 12,706.42 : x
2. Step 2: Convert to fraction form
   16,905.46/23,301.58 = 12,706.42/x
3. Step 3: Cross multiply
   16,905.46x = 23,301.58 × 12,706.42
4. Step 4: Simplify right side
   16,905.46x = 296,079,662.14
5. Step 5: Solve for x
   x = 296,079,662.14/16,905.46
6. Step 6: Final answer
   x = 17,513.85