Finding the Fourth Proportional to 8,805.69, 12,155.76 and 5,623.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,805.69 : 12,155.76 = 5,623.16 : x
2. Step 2: Convert to fraction form
   8,805.69/12,155.76 = 5,623.16/x
3. Step 3: Cross multiply
   8,805.69x = 12,155.76 × 5,623.16
4. Step 4: Simplify right side
   8,805.69x = 68,353,722.62
5. Step 5: Solve for x
   x = 68,353,722.62/8,805.69
6. Step 6: Final answer
   x = 7,762.45