Finding the Fourth Proportional to 8,603.94, 12,897.18 and 5,830.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,603.94 : 12,897.18 = 5,830.89 : x
2. Step 2: Convert to fraction form
   8,603.94/12,897.18 = 5,830.89/x
3. Step 3: Cross multiply
   8,603.94x = 12,897.18 × 5,830.89
4. Step 4: Simplify right side
   8,603.94x = 75,202,037.89
5. Step 5: Solve for x
   x = 75,202,037.89/8,603.94
6. Step 6: Final answer
   x = 8,740.42