Finding the Fourth Proportional to 9,258.40, 12,775.98 and 5,721.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,258.40 : 12,775.98 = 5,721.04 : x
2. Step 2: Convert to fraction form
   9,258.40/12,775.98 = 5,721.04/x
3. Step 3: Cross multiply
   9,258.40x = 12,775.98 × 5,721.04
4. Step 4: Simplify right side
   9,258.40x = 73,091,892.62
5. Step 5: Solve for x
   x = 73,091,892.62/9,258.40
6. Step 6: Final answer
   x = 7,894.66