Finding the Fourth Proportional to 12,123.25, 16,728.19 and 7,649.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.25 : 16,728.19 = 7,649.46 : x
2. Step 2: Convert to fraction form
   12,123.25/16,728.19 = 7,649.46/x
3. Step 3: Cross multiply
   12,123.25x = 16,728.19 × 7,649.46
4. Step 4: Simplify right side
   12,123.25x = 127,961,601.15
5. Step 5: Solve for x
   x = 127,961,601.15/12,123.25
6. Step 6: Final answer
   x = 10,555.06