Finding the Fourth Proportional to 23,506.81, 32,440.31 and 12,896.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,506.81 : 32,440.31 = 12,896.89 : x
2. Step 2: Convert to fraction form
   23,506.81/32,440.31 = 12,896.89/x
3. Step 3: Cross multiply
   23,506.81x = 32,440.31 × 12,896.89
4. Step 4: Simplify right side
   23,506.81x = 418,379,045.15
5. Step 5: Solve for x
   x = 418,379,045.15/23,506.81
6. Step 6: Final answer
   x = 17,798.21