Finding the Fourth Proportional to 8,989.61, 12,411.42 and 5,804.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.61 : 12,411.42 = 5,804.33 : x
2. Step 2: Convert to fraction form
   8,989.61/12,411.42 = 5,804.33/x
3. Step 3: Cross multiply
   8,989.61x = 12,411.42 × 5,804.33
4. Step 4: Simplify right side
   8,989.61x = 72,039,915.39
5. Step 5: Solve for x
   x = 72,039,915.39/8,989.61
6. Step 6: Final answer
   x = 8,013.69