Finding the Fourth Proportional to 23,290.71, 32,136.94 and 13,219.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.71 : 32,136.94 = 13,219.57 : x
2. Step 2: Convert to fraction form
   23,290.71/32,136.94 = 13,219.57/x
3. Step 3: Cross multiply
   23,290.71x = 32,136.94 × 13,219.57
4. Step 4: Simplify right side
   23,290.71x = 424,836,527.92
5. Step 5: Solve for x
   x = 424,836,527.92/23,290.71
6. Step 6: Final answer
   x = 18,240.60