Finding the Fourth Proportional to 9,390.20, 12,956.55 and 5,410.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,390.20 : 12,956.55 = 5,410.28 : x
2. Step 2: Convert to fraction form
   9,390.20/12,956.55 = 5,410.28/x
3. Step 3: Cross multiply
   9,390.20x = 12,956.55 × 5,410.28
4. Step 4: Simplify right side
   9,390.20x = 70,098,563.33
5. Step 5: Solve for x
   x = 70,098,563.33/9,390.20
6. Step 6: Final answer
   x = 7,465.08