Finding the Fourth Proportional to 23,019.96, 31,758.56 and 12,946.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,019.96 : 31,758.56 = 12,946.10 : x
2. Step 2: Convert to fraction form
   23,019.96/31,758.56 = 12,946.10/x
3. Step 3: Cross multiply
   23,019.96x = 31,758.56 × 12,946.10
4. Step 4: Simplify right side
   23,019.96x = 411,149,282.23
5. Step 5: Solve for x
   x = 411,149,282.23/23,019.96
6. Step 6: Final answer
   x = 17,860.55