Finding the Fourth Proportional to 8,688.89, 13,022.86 and 4,002.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,688.89 : 13,022.86 = 4,002.49 : x
2. Step 2: Convert to fraction form
   8,688.89/13,022.86 = 4,002.49/x
3. Step 3: Cross multiply
   8,688.89x = 13,022.86 × 4,002.49
4. Step 4: Simplify right side
   8,688.89x = 52,123,866.92
5. Step 5: Solve for x
   x = 52,123,866.92/8,688.89
6. Step 6: Final answer
   x = 5,998.91