Finding the Fourth Proportional to 31,397.31, 43,328.16 and 17,968.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,397.31 : 43,328.16 = 17,968.50 : x
2. Step 2: Convert to fraction form
   31,397.31/43,328.16 = 17,968.50/x
3. Step 3: Cross multiply
   31,397.31x = 43,328.16 × 17,968.50
4. Step 4: Simplify right side
   31,397.31x = 778,542,042.96
5. Step 5: Solve for x
   x = 778,542,042.96/31,397.31
6. Step 6: Final answer
   x = 24,796.46