Finding the Fourth Proportional to 9,019.43, 12,438.75 and 5,662.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.43 : 12,438.75 = 5,662.55 : x
2. Step 2: Convert to fraction form
   9,019.43/12,438.75 = 5,662.55/x
3. Step 3: Cross multiply
   9,019.43x = 12,438.75 × 5,662.55
4. Step 4: Simplify right side
   9,019.43x = 70,435,053.67
5. Step 5: Solve for x
   x = 70,435,053.67/9,019.43
6. Step 6: Final answer
   x = 7,809.26