Finding the Fourth Proportional to 9,471.82, 13,066.31 and 7,229.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,471.82 : 13,066.31 = 7,229.80 : x
2. Step 2: Convert to fraction form
   9,471.82/13,066.31 = 7,229.80/x
3. Step 3: Cross multiply
   9,471.82x = 13,066.31 × 7,229.80
4. Step 4: Simplify right side
   9,471.82x = 94,466,771.89
5. Step 5: Solve for x
   x = 94,466,771.89/9,471.82
6. Step 6: Final answer
   x = 9,973.46