Finding the Fourth Proportional to 9,423.32, 12,999.74 and 5,644.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,423.32 : 12,999.74 = 5,644.67 : x
2. Step 2: Convert to fraction form
   9,423.32/12,999.74 = 5,644.67/x
3. Step 3: Cross multiply
   9,423.32x = 12,999.74 × 5,644.67
4. Step 4: Simplify right side
   9,423.32x = 73,379,149.16
5. Step 5: Solve for x
   x = 73,379,149.16/9,423.32
6. Step 6: Final answer
   x = 7,786.98