Finding the Fourth Proportional to 9,108.01, 12,569.59 and 5,571.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,108.01 : 12,569.59 = 5,571.90 : x
2. Step 2: Convert to fraction form
   9,108.01/12,569.59 = 5,571.90/x
3. Step 3: Cross multiply
   9,108.01x = 12,569.59 × 5,571.90
4. Step 4: Simplify right side
   9,108.01x = 70,036,505.49
5. Step 5: Solve for x
   x = 70,036,505.49/9,108.01
6. Step 6: Final answer
   x = 7,689.55