Finding the Fourth Proportional to 9,361.09, 12,920.52 and 5,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,361.09 : 12,920.52 = 5,384.50 : x
2. Step 2: Convert to fraction form
   9,361.09/12,920.52 = 5,384.50/x
3. Step 3: Cross multiply
   9,361.09x = 12,920.52 × 5,384.50
4. Step 4: Simplify right side
   9,361.09x = 69,570,539.94
5. Step 5: Solve for x
   x = 69,570,539.94/9,361.09
6. Step 6: Final answer
   x = 7,431.88