Finding the Fourth Proportional to 9,105.82, 12,568.16 and 5,571.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.82 : 12,568.16 = 5,571.99 : x
2. Step 2: Convert to fraction form
   9,105.82/12,568.16 = 5,571.99/x
3. Step 3: Cross multiply
   9,105.82x = 12,568.16 × 5,571.99
4. Step 4: Simplify right side
   9,105.82x = 70,029,675.77
5. Step 5: Solve for x
   x = 70,029,675.77/9,105.82
6. Step 6: Final answer
   x = 7,690.65