Finding the Fourth Proportional to 9,406.48, 12,980.74 and 5,427.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,406.48 : 12,980.74 = 5,427.32 : x
2. Step 2: Convert to fraction form
   9,406.48/12,980.74 = 5,427.32/x
3. Step 3: Cross multiply
   9,406.48x = 12,980.74 × 5,427.32
4. Step 4: Simplify right side
   9,406.48x = 70,450,629.82
5. Step 5: Solve for x
   x = 70,450,629.82/9,406.48
6. Step 6: Final answer
   x = 7,489.58