Finding the Fourth Proportional to 9,462.79, 13,058.17 and 5,485.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,462.79 : 13,058.17 = 5,485.20 : x
2. Step 2: Convert to fraction form
   9,462.79/13,058.17 = 5,485.20/x
3. Step 3: Cross multiply
   9,462.79x = 13,058.17 × 5,485.20
4. Step 4: Simplify right side
   9,462.79x = 71,626,674.08
5. Step 5: Solve for x
   x = 71,626,674.08/9,462.79
6. Step 6: Final answer
   x = 7,569.30