Finding the Fourth Proportional to 8,812.69, 12,165.42 and 5,630.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,812.69 : 12,165.42 = 5,630.17 : x
2. Step 2: Convert to fraction form
   8,812.69/12,165.42 = 5,630.17/x
3. Step 3: Cross multiply
   8,812.69x = 12,165.42 × 5,630.17
4. Step 4: Simplify right side
   8,812.69x = 68,493,382.72
5. Step 5: Solve for x
   x = 68,493,382.72/8,812.69
6. Step 6: Final answer
   x = 7,772.13