Finding the Fourth Proportional to 8,818.24, 12,166.96 and 5,678.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.24 : 12,166.96 = 5,678.56 : x
2. Step 2: Convert to fraction form
   8,818.24/12,166.96 = 5,678.56/x
3. Step 3: Cross multiply
   8,818.24x = 12,166.96 × 5,678.56
4. Step 4: Simplify right side
   8,818.24x = 69,090,812.38
5. Step 5: Solve for x
   x = 69,090,812.38/8,818.24
6. Step 6: Final answer
   x = 7,834.99