Finding the Fourth Proportional to 8,669.48, 13,018.62 and 8,669.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,669.48 : 13,018.62 = 8,669.48 : x
2. Step 2: Convert to fraction form
   8,669.48/13,018.62 = 8,669.48/x
3. Step 3: Cross multiply
   8,669.48x = 13,018.62 × 8,669.48
4. Step 4: Simplify right side
   8,669.48x = 112,864,665.72
5. Step 5: Solve for x
   x = 112,864,665.72/8,669.48
6. Step 6: Final answer
   x = 13,018.62