Finding the Fourth Proportional to 16,928.38, 23,339.10 and 12,943.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,928.38 : 23,339.10 = 12,943.18 : x
2. Step 2: Convert to fraction form
   16,928.38/23,339.10 = 12,943.18/x
3. Step 3: Cross multiply
   16,928.38x = 23,339.10 × 12,943.18
4. Step 4: Simplify right side
   16,928.38x = 302,082,172.34
5. Step 5: Solve for x
   x = 302,082,172.34/16,928.38
6. Step 6: Final answer
   x = 17,844.72