Finding the Fourth Proportional to 23,638.30, 32,620.42 and 12,883.27

Step by Step Solution

1. Step 1: Write the proportion equation
   23,638.30 : 32,620.42 = 12,883.27 : x
2. Step 2: Convert to fraction form
   23,638.30/32,620.42 = 12,883.27/x
3. Step 3: Cross multiply
   23,638.30x = 32,620.42 × 12,883.27
4. Step 4: Simplify right side
   23,638.30x = 420,257,678.37
5. Step 5: Solve for x
   x = 420,257,678.37/23,638.30
6. Step 6: Final answer
   x = 17,778.68