Finding the Fourth Proportional to 31,388.73, 43,316.74 and 17,241.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,388.73 : 43,316.74 = 17,241.57 : x
2. Step 2: Convert to fraction form
   31,388.73/43,316.74 = 17,241.57/x
3. Step 3: Cross multiply
   31,388.73x = 43,316.74 × 17,241.57
4. Step 4: Simplify right side
   31,388.73x = 746,848,626.43
5. Step 5: Solve for x
   x = 746,848,626.43/31,388.73
6. Step 6: Final answer
   x = 23,793.53