Finding the Fourth Proportional to 8,669.36, 13,006.38 and 3,123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,669.36 : 13,006.38 = 3,123.32 : x
2. Step 2: Convert to fraction form
   8,669.36/13,006.38 = 3,123.32/x
3. Step 3: Cross multiply
   8,669.36x = 13,006.38 × 3,123.32
4. Step 4: Simplify right side
   8,669.36x = 40,623,086.78
5. Step 5: Solve for x
   x = 40,623,086.78/8,669.36
6. Step 6: Final answer
   x = 4,685.82