Finding the Fourth Proportional to 23,020.72, 31,759.59 and 12,946.85

Step by Step Solution

1. Step 1: Write the proportion equation
   23,020.72 : 31,759.59 = 12,946.85 : x
2. Step 2: Convert to fraction form
   23,020.72/31,759.59 = 12,946.85/x
3. Step 3: Cross multiply
   23,020.72x = 31,759.59 × 12,946.85
4. Step 4: Simplify right side
   23,020.72x = 411,186,488.99
5. Step 5: Solve for x
   x = 411,186,488.99/23,020.72
6. Step 6: Final answer
   x = 17,861.58