Finding the Fourth Proportional to 13,123.56, 18,100.26 and 8,408.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.56 : 18,100.26 = 8,408.28 : x
2. Step 2: Convert to fraction form
   13,123.56/18,100.26 = 8,408.28/x
3. Step 3: Cross multiply
   13,123.56x = 18,100.26 × 8,408.28
4. Step 4: Simplify right side
   13,123.56x = 152,192,054.15
5. Step 5: Solve for x
   x = 152,192,054.15/13,123.56
6. Step 6: Final answer
   x = 11,596.86