Finding the Fourth Proportional to 14,645.82, 20,211.25 and 7,931.46

Step by Step Solution

1. Step 1: Write the proportion equation
   14,645.82 : 20,211.25 = 7,931.46 : x
2. Step 2: Convert to fraction form
   14,645.82/20,211.25 = 7,931.46/x
3. Step 3: Cross multiply
   14,645.82x = 20,211.25 × 7,931.46
4. Step 4: Simplify right side
   14,645.82x = 160,304,598.92
5. Step 5: Solve for x
   x = 160,304,598.92/14,645.82
6. Step 6: Final answer
   x = 10,945.42