Finding the Fourth Proportional to 9,021.30, 12,441.33 and 5,664.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.30 : 12,441.33 = 5,664.43 : x
2. Step 2: Convert to fraction form
   9,021.30/12,441.33 = 5,664.43/x
3. Step 3: Cross multiply
   9,021.30x = 12,441.33 × 5,664.43
4. Step 4: Simplify right side
   9,021.30x = 70,473,011.79
5. Step 5: Solve for x
   x = 70,473,011.79/9,021.30
6. Step 6: Final answer
   x = 7,811.85