Finding the Fourth Proportional to 9,406.08, 12,980.25 and 5,427.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,406.08 : 12,980.25 = 5,427.54 : x
2. Step 2: Convert to fraction form
   9,406.08/12,980.25 = 5,427.54/x
3. Step 3: Cross multiply
   9,406.08x = 12,980.25 × 5,427.54
4. Step 4: Simplify right side
   9,406.08x = 70,450,826.09
5. Step 5: Solve for x
   x = 70,450,826.09/9,406.08
6. Step 6: Final answer
   x = 7,489.92