Finding the Fourth Proportional to 9,021.48, 12,439.50 and 5,830.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.48 : 12,439.50 = 5,830.56 : x
2. Step 2: Convert to fraction form
   9,021.48/12,439.50 = 5,830.56/x
3. Step 3: Cross multiply
   9,021.48x = 12,439.50 × 5,830.56
4. Step 4: Simplify right side
   9,021.48x = 72,529,251.12
5. Step 5: Solve for x
   x = 72,529,251.12/9,021.48
6. Step 6: Final answer
   x = 8,039.62