Finding the Fourth Proportional to 9,145.10, 12,618.57 and 5,368.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.10 : 12,618.57 = 5,368.42 : x
2. Step 2: Convert to fraction form
   9,145.10/12,618.57 = 5,368.42/x
3. Step 3: Cross multiply
   9,145.10x = 12,618.57 × 5,368.42
4. Step 4: Simplify right side
   9,145.10x = 67,741,756.72
5. Step 5: Solve for x
   x = 67,741,756.72/9,145.10
6. Step 6: Final answer
   x = 7,407.44