Finding the Fourth Proportional to 31,380.06, 43,304.79 and 17,233.21

Step by Step Solution

1. Step 1: Write the proportion equation
   31,380.06 : 43,304.79 = 17,233.21 : x
2. Step 2: Convert to fraction form
   31,380.06/43,304.79 = 17,233.21/x
3. Step 3: Cross multiply
   31,380.06x = 43,304.79 × 17,233.21
4. Step 4: Simplify right side
   31,380.06x = 746,280,540.08
5. Step 5: Solve for x
   x = 746,280,540.08/31,380.06
6. Step 6: Final answer
   x = 23,782.00