Finding the Fourth Proportional to 9,640.67, 14,451.15 and 5,471.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.67 : 14,451.15 = 5,471.89 : x
2. Step 2: Convert to fraction form
   9,640.67/14,451.15 = 5,471.89/x
3. Step 3: Cross multiply
   9,640.67x = 14,451.15 × 5,471.89
4. Step 4: Simplify right side
   9,640.67x = 79,075,030.92
5. Step 5: Solve for x
   x = 79,075,030.92/9,640.67
6. Step 6: Final answer
   x = 8,202.23