Finding the Fourth Proportional to 9,348.85, 12,904.28 and 5,574.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,348.85 : 12,904.28 = 5,574.79 : x
2. Step 2: Convert to fraction form
   9,348.85/12,904.28 = 5,574.79/x
3. Step 3: Cross multiply
   9,348.85x = 12,904.28 × 5,574.79
4. Step 4: Simplify right side
   9,348.85x = 71,938,651.10
5. Step 5: Solve for x
   x = 71,938,651.10/9,348.85
6. Step 6: Final answer
   x = 7,694.92