Finding the Fourth Proportional to 20,634.67, 30,938.27 and 7,485.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,634.67 : 30,938.27 = 7,485.34 : x
2. Step 2: Convert to fraction form
   20,634.67/30,938.27 = 7,485.34/x
3. Step 3: Cross multiply
   20,634.67x = 30,938.27 × 7,485.34
4. Step 4: Simplify right side
   20,634.67x = 231,583,469.96
5. Step 5: Solve for x
   x = 231,583,469.96/20,634.67
6. Step 6: Final answer
   x = 11,223.03