Finding the Fourth Proportional to 9,355.45, 12,911.94 and 5,819.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.45 : 12,911.94 = 5,819.80 : x
2. Step 2: Convert to fraction form
   9,355.45/12,911.94 = 5,819.80/x
3. Step 3: Cross multiply
   9,355.45x = 12,911.94 × 5,819.80
4. Step 4: Simplify right side
   9,355.45x = 75,144,908.41
5. Step 5: Solve for x
   x = 75,144,908.41/9,355.45
6. Step 6: Final answer
   x = 8,032.21