Finding the Fourth Proportional to 9,361.70, 12,921.69 and 5,383.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,361.70 : 12,921.69 = 5,383.22 : x
2. Step 2: Convert to fraction form
   9,361.70/12,921.69 = 5,383.22/x
3. Step 3: Cross multiply
   9,361.70x = 12,921.69 × 5,383.22
4. Step 4: Simplify right side
   9,361.70x = 69,560,300.04
5. Step 5: Solve for x
   x = 69,560,300.04/9,361.70
6. Step 6: Final answer
   x = 7,430.31