Finding the Fourth Proportional to 9,105.56, 12,573.25 and 6,131.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.56 : 12,573.25 = 6,131.24 : x
2. Step 2: Convert to fraction form
   9,105.56/12,573.25 = 6,131.24/x
3. Step 3: Cross multiply
   9,105.56x = 12,573.25 × 6,131.24
4. Step 4: Simplify right side
   9,105.56x = 77,089,535.14
5. Step 5: Solve for x
   x = 77,089,535.14/9,105.56
6. Step 6: Final answer
   x = 8,466.21