Finding the Fourth Proportional to 9,622.42, 13,286.46 and 7,380.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.42 : 13,286.46 = 7,380.75 : x
2. Step 2: Convert to fraction form
   9,622.42/13,286.46 = 7,380.75/x
3. Step 3: Cross multiply
   9,622.42x = 13,286.46 × 7,380.75
4. Step 4: Simplify right side
   9,622.42x = 98,064,039.65
5. Step 5: Solve for x
   x = 98,064,039.65/9,622.42
6. Step 6: Final answer
   x = 10,191.20