Finding the Fourth Proportional to 12,123.92, 18,178.56 and 4,726.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.92 : 18,178.56 = 4,726.96 : x
2. Step 2: Convert to fraction form
   12,123.92/18,178.56 = 4,726.96/x
3. Step 3: Cross multiply
   12,123.92x = 18,178.56 × 4,726.96
4. Step 4: Simplify right side
   12,123.92x = 85,929,325.98
5. Step 5: Solve for x
   x = 85,929,325.98/12,123.92
6. Step 6: Final answer
   x = 7,087.59