Finding the Fourth Proportional to 16,919.01, 23,333.94 and 12,680.01

Step by Step Solution

1. Step 1: Write the proportion equation
   16,919.01 : 23,333.94 = 12,680.01 : x
2. Step 2: Convert to fraction form
   16,919.01/23,333.94 = 12,680.01/x
3. Step 3: Cross multiply
   16,919.01x = 23,333.94 × 12,680.01
4. Step 4: Simplify right side
   16,919.01x = 295,874,592.54
5. Step 5: Solve for x
   x = 295,874,592.54/16,919.01
6. Step 6: Final answer
   x = 17,487.70