Finding the Fourth Proportional to 23,128.86, 34,662.21 and 12,012.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,128.86 : 34,662.21 = 12,012.42 : x
2. Step 2: Convert to fraction form
   23,128.86/34,662.21 = 12,012.42/x
3. Step 3: Cross multiply
   23,128.86x = 34,662.21 × 12,012.42
4. Step 4: Simplify right side
   23,128.86x = 416,377,024.65
5. Step 5: Solve for x
   x = 416,377,024.65/23,128.86
6. Step 6: Final answer
   x = 18,002.49