Finding the Fourth Proportional to 9,144.28, 12,619.02 and 5,367.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.28 : 12,619.02 = 5,367.52 : x
2. Step 2: Convert to fraction form
   9,144.28/12,619.02 = 5,367.52/x
3. Step 3: Cross multiply
   9,144.28x = 12,619.02 × 5,367.52
4. Step 4: Simplify right side
   9,144.28x = 67,732,842.23
5. Step 5: Solve for x
   x = 67,732,842.23/9,144.28
6. Step 6: Final answer
   x = 7,407.13