Finding the Fourth Proportional to 9,403.64, 12,974.06 and 5,424.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,403.64 : 12,974.06 = 5,424.22 : x
2. Step 2: Convert to fraction form
   9,403.64/12,974.06 = 5,424.22/x
3. Step 3: Cross multiply
   9,403.64x = 12,974.06 × 5,424.22
4. Step 4: Simplify right side
   9,403.64x = 70,374,155.73
5. Step 5: Solve for x
   x = 70,374,155.73/9,403.64
6. Step 6: Final answer
   x = 7,483.71