Finding the Fourth Proportional to 27,958.75, 38,597.35 and 21,571

Step by Step Solution

1. Step 1: Write the proportion equation
   27,958.75 : 38,597.35 = 21,571 : x
2. Step 2: Convert to fraction form
   27,958.75/38,597.35 = 21,571/x
3. Step 3: Cross multiply
   27,958.75x = 38,597.35 × 21,571
4. Step 4: Simplify right side
   27,958.75x = 832,583,436.85
5. Step 5: Solve for x
   x = 832,583,436.85/27,958.75
6. Step 6: Final answer
   x = 29,778.99