Finding the Fourth Proportional to 9,391.07, 12,959.69 and 5,854.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,391.07 : 12,959.69 = 5,854.30 : x
2. Step 2: Convert to fraction form
   9,391.07/12,959.69 = 5,854.30/x
3. Step 3: Cross multiply
   9,391.07x = 12,959.69 × 5,854.30
4. Step 4: Simplify right side
   9,391.07x = 75,869,851.50
5. Step 5: Solve for x
   x = 75,869,851.50/9,391.07
6. Step 6: Final answer
   x = 8,078.93