Finding the Fourth Proportional to 8,993.06, 12,408.36 and 5,406.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,993.06 : 12,408.36 = 5,406.38 : x
2. Step 2: Convert to fraction form
   8,993.06/12,408.36 = 5,406.38/x
3. Step 3: Cross multiply
   8,993.06x = 12,408.36 × 5,406.38
4. Step 4: Simplify right side
   8,993.06x = 67,084,309.34
5. Step 5: Solve for x
   x = 67,084,309.34/8,993.06
6. Step 6: Final answer
   x = 7,459.56