Finding the Fourth Proportional to 9,145.97, 12,621.34 and 5,368.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.97 : 12,621.34 = 5,368.49 : x
2. Step 2: Convert to fraction form
   9,145.97/12,621.34 = 5,368.49/x
3. Step 3: Cross multiply
   9,145.97x = 12,621.34 × 5,368.49
4. Step 4: Simplify right side
   9,145.97x = 67,757,495.94
5. Step 5: Solve for x
   x = 67,757,495.94/9,145.97
6. Step 6: Final answer
   x = 7,408.45