Finding the Fourth Proportional to 9,147.24, 12,618.55 and 5,784.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.24 : 12,618.55 = 5,784.39 : x
2. Step 2: Convert to fraction form
   9,147.24/12,618.55 = 5,784.39/x
3. Step 3: Cross multiply
   9,147.24x = 12,618.55 × 5,784.39
4. Step 4: Simplify right side
   9,147.24x = 72,990,614.43
5. Step 5: Solve for x
   x = 72,990,614.43/9,147.24
6. Step 6: Final answer
   x = 7,979.52