Finding the Fourth Proportional to 9,291.89, 12,825.11 and 5,707.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.89 : 12,825.11 = 5,707.71 : x
2. Step 2: Convert to fraction form
   9,291.89/12,825.11 = 5,707.71/x
3. Step 3: Cross multiply
   9,291.89x = 12,825.11 × 5,707.71
4. Step 4: Simplify right side
   9,291.89x = 73,201,980.06
5. Step 5: Solve for x
   x = 73,201,980.06/9,291.89
6. Step 6: Final answer
   x = 7,878.05