Finding the Fourth Proportional to 9,408.42, 12,983.24 and 5,375.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,408.42 : 12,983.24 = 5,375.45 : x
2. Step 2: Convert to fraction form
   9,408.42/12,983.24 = 5,375.45/x
3. Step 3: Cross multiply
   9,408.42x = 12,983.24 × 5,375.45
4. Step 4: Simplify right side
   9,408.42x = 69,790,803.35
5. Step 5: Solve for x
   x = 69,790,803.35/9,408.42
6. Step 6: Final answer
   x = 7,417.91