Finding the Fourth Proportional to 8,971.76, 12,375.78 and 5,830.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.76 : 12,375.78 = 5,830.04 : x
2. Step 2: Convert to fraction form
   8,971.76/12,375.78 = 5,830.04/x
3. Step 3: Cross multiply
   8,971.76x = 12,375.78 × 5,830.04
4. Step 4: Simplify right side
   8,971.76x = 72,151,292.43
5. Step 5: Solve for x
   x = 72,151,292.43/8,971.76
6. Step 6: Final answer
   x = 8,042.04