Finding the Fourth Proportional to 23,391.82, 32,280.83 and 12,781.63

Step by Step Solution

1. Step 1: Write the proportion equation
   23,391.82 : 32,280.83 = 12,781.63 : x
2. Step 2: Convert to fraction form
   23,391.82/32,280.83 = 12,781.63/x
3. Step 3: Cross multiply
   23,391.82x = 32,280.83 × 12,781.63
4. Step 4: Simplify right side
   23,391.82x = 412,601,625.15
5. Step 5: Solve for x
   x = 412,601,625.15/23,391.82
6. Step 6: Final answer
   x = 17,638.71