Finding the Fourth Proportional to 23,231.40, 32,059.05 and 12,620.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,231.40 : 32,059.05 = 12,620.40 : x
2. Step 2: Convert to fraction form
   23,231.40/32,059.05 = 12,620.40/x
3. Step 3: Cross multiply
   23,231.40x = 32,059.05 × 12,620.40
4. Step 4: Simplify right side
   23,231.40x = 404,598,034.62
5. Step 5: Solve for x
   x = 404,598,034.62/23,231.40
6. Step 6: Final answer
   x = 17,416.00