Finding the Fourth Proportional to 9,106.49, 12,560.66 and 5,571.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106.49 : 12,560.66 = 5,571.45 : x
2. Step 2: Convert to fraction form
   9,106.49/12,560.66 = 5,571.45/x
3. Step 3: Cross multiply
   9,106.49x = 12,560.66 × 5,571.45
4. Step 4: Simplify right side
   9,106.49x = 69,981,061.30
5. Step 5: Solve for x
   x = 69,981,061.30/9,106.49
6. Step 6: Final answer
   x = 7,684.75