Finding the Fourth Proportional to 23,250.81, 32,087.43 and 12,640.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,250.81 : 32,087.43 = 12,640.23 : x
2. Step 2: Convert to fraction form
   23,250.81/32,087.43 = 12,640.23/x
3. Step 3: Cross multiply
   23,250.81x = 32,087.43 × 12,640.23
4. Step 4: Simplify right side
   23,250.81x = 405,592,495.31
5. Step 5: Solve for x
   x = 405,592,495.31/23,250.81
6. Step 6: Final answer
   x = 17,444.23