Finding the Fourth Proportional to 23,136.57, 31,928.56 and 12,526.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,136.57 : 31,928.56 = 12,526.18 : x
2. Step 2: Convert to fraction form
   23,136.57/31,928.56 = 12,526.18/x
3. Step 3: Cross multiply
   23,136.57x = 31,928.56 × 12,526.18
4. Step 4: Simplify right side
   23,136.57x = 399,942,778.56
5. Step 5: Solve for x
   x = 399,942,778.56/23,136.57
6. Step 6: Final answer
   x = 17,286.17