Finding the Fourth Proportional to 8,817.65, 12,168.89 and 5,828.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,817.65 : 12,168.89 = 5,828.30 : x
2. Step 2: Convert to fraction form
   8,817.65/12,168.89 = 5,828.30/x
3. Step 3: Cross multiply
   8,817.65x = 12,168.89 × 5,828.30
4. Step 4: Simplify right side
   8,817.65x = 70,923,851.60
5. Step 5: Solve for x
   x = 70,923,851.60/8,817.65
6. Step 6: Final answer
   x = 8,043.40