Finding the Fourth Proportional to 23,391.36, 32,280.56 and 12,781.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,391.36 : 32,280.56 = 12,781.69 : x
2. Step 2: Convert to fraction form
   23,391.36/32,280.56 = 12,781.69/x
3. Step 3: Cross multiply
   23,391.36x = 32,280.56 × 12,781.69
4. Step 4: Simplify right side
   23,391.36x = 412,600,110.95
5. Step 5: Solve for x
   x = 412,600,110.95/23,391.36
6. Step 6: Final answer
   x = 17,639.00