Finding the Fourth Proportional to 34,420.89, 47,496.60 and 20,271

Step by Step Solution

1. Step 1: Write the proportion equation
   34,420.89 : 47,496.60 = 20,271 : x
2. Step 2: Convert to fraction form
   34,420.89/47,496.60 = 20,271/x
3. Step 3: Cross multiply
   34,420.89x = 47,496.60 × 20,271
4. Step 4: Simplify right side
   34,420.89x = 962,803,578.60
5. Step 5: Solve for x
   x = 962,803,578.60/34,420.89
6. Step 6: Final answer
   x = 27,971.49