Finding the Fourth Proportional to 23,915.99, 35,874.89 and 12,215.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,915.99 : 35,874.89 = 12,215.54 : x
2. Step 2: Convert to fraction form
   23,915.99/35,874.89 = 12,215.54/x
3. Step 3: Cross multiply
   23,915.99x = 35,874.89 × 12,215.54
4. Step 4: Simplify right side
   23,915.99x = 438,231,153.79
5. Step 5: Solve for x
   x = 438,231,153.79/23,915.99
6. Step 6: Final answer
   x = 18,323.77