Finding the Fourth Proportional to 8,819.39, 12,171.31 and 5,830.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,819.39 : 12,171.31 = 5,830.04 : x
2. Step 2: Convert to fraction form
   8,819.39/12,171.31 = 5,830.04/x
3. Step 3: Cross multiply
   8,819.39x = 12,171.31 × 5,830.04
4. Step 4: Simplify right side
   8,819.39x = 70,959,195.00
5. Step 5: Solve for x
   x = 70,959,195.00/8,819.39
6. Step 6: Final answer
   x = 8,045.82