Finding the Fourth Proportional to 23,215.03, 32,036.42 and 13,143.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,215.03 : 32,036.42 = 13,143.21 : x
2. Step 2: Convert to fraction form
   23,215.03/32,036.42 = 13,143.21/x
3. Step 3: Cross multiply
   23,215.03x = 32,036.42 × 13,143.21
4. Step 4: Simplify right side
   23,215.03x = 421,061,169.81
5. Step 5: Solve for x
   x = 421,061,169.81/23,215.03
6. Step 6: Final answer
   x = 18,137.44