Finding the Fourth Proportional to 13,123.56, 18,117.24 and 8,896.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.56 : 18,117.24 = 8,896.98 : x
2. Step 2: Convert to fraction form
   13,123.56/18,117.24 = 8,896.98/x
3. Step 3: Cross multiply
   13,123.56x = 18,117.24 × 8,896.98
4. Step 4: Simplify right side
   13,123.56x = 161,188,721.94
5. Step 5: Solve for x
   x = 161,188,721.94/13,123.56
6. Step 6: Final answer
   x = 12,282.39