Finding the Fourth Proportional to 12,123.50, 16,729.23 and 6,818.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.50 : 16,729.23 = 6,818.19 : x
2. Step 2: Convert to fraction form
   12,123.50/16,729.23 = 6,818.19/x
3. Step 3: Cross multiply
   12,123.50x = 16,729.23 × 6,818.19
4. Step 4: Simplify right side
   12,123.50x = 114,063,068.69
5. Step 5: Solve for x
   x = 114,063,068.69/12,123.50
6. Step 6: Final answer
   x = 9,408.43