Finding the Fourth Proportional to 9,091.09, 12,543.81 and 5,729.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.09 : 12,543.81 = 5,729.94 : x
2. Step 2: Convert to fraction form
   9,091.09/12,543.81 = 5,729.94/x
3. Step 3: Cross multiply
   9,091.09x = 12,543.81 × 5,729.94
4. Step 4: Simplify right side
   9,091.09x = 71,875,289.42
5. Step 5: Solve for x
   x = 71,875,289.42/9,091.09
6. Step 6: Final answer
   x = 7,906.13