Finding the Fourth Proportional to 9,015.74, 12,443.94 and 5,481.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,015.74 : 12,443.94 = 5,481.30 : x
2. Step 2: Convert to fraction form
   9,015.74/12,443.94 = 5,481.30/x
3. Step 3: Cross multiply
   9,015.74x = 12,443.94 × 5,481.30
4. Step 4: Simplify right side
   9,015.74x = 68,208,968.32
5. Step 5: Solve for x
   x = 68,208,968.32/9,015.74
6. Step 6: Final answer
   x = 7,565.54