Finding the Fourth Proportional to 23,020.96, 31,759.94 and 12,947.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,020.96 : 31,759.94 = 12,947.10 : x
2. Step 2: Convert to fraction form
   23,020.96/31,759.94 = 12,947.10/x
3. Step 3: Cross multiply
   23,020.96x = 31,759.94 × 12,947.10
4. Step 4: Simplify right side
   23,020.96x = 411,199,119.17
5. Step 5: Solve for x
   x = 411,199,119.17/23,020.96
6. Step 6: Final answer
   x = 17,861.94