Finding the Fourth Proportional to 9,110.56, 12,572.61 and 5,131.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,110.56 : 12,572.61 = 5,131.73 : x
2. Step 2: Convert to fraction form
   9,110.56/12,572.61 = 5,131.73/x
3. Step 3: Cross multiply
   9,110.56x = 12,572.61 × 5,131.73
4. Step 4: Simplify right side
   9,110.56x = 64,519,239.92
5. Step 5: Solve for x
   x = 64,519,239.92/9,110.56
6. Step 6: Final answer
   x = 7,081.81