Finding the Fourth Proportional to 9,361.88, 12,920.16 and 5,384.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,361.88 : 12,920.16 = 5,384.27 : x
2. Step 2: Convert to fraction form
   9,361.88/12,920.16 = 5,384.27/x
3. Step 3: Cross multiply
   9,361.88x = 12,920.16 × 5,384.27
4. Step 4: Simplify right side
   9,361.88x = 69,565,629.88
5. Step 5: Solve for x
   x = 69,565,629.88/9,361.88
6. Step 6: Final answer
   x = 7,430.73