Finding the Fourth Proportional to 9,408.24, 12,983.96 and 5,430.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,408.24 : 12,983.96 = 5,430.08 : x
2. Step 2: Convert to fraction form
   9,408.24/12,983.96 = 5,430.08/x
3. Step 3: Cross multiply
   9,408.24x = 12,983.96 × 5,430.08
4. Step 4: Simplify right side
   9,408.24x = 70,503,941.52
5. Step 5: Solve for x
   x = 70,503,941.52/9,408.24
6. Step 6: Final answer
   x = 7,493.85