Finding the Fourth Proportional to 7,123.29, 10,678.07 and 4,783.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.29 : 10,678.07 = 4,783.93 : x
2. Step 2: Convert to fraction form
   7,123.29/10,678.07 = 4,783.93/x
3. Step 3: Cross multiply
   7,123.29x = 10,678.07 × 4,783.93
4. Step 4: Simplify right side
   7,123.29x = 51,083,139.42
5. Step 5: Solve for x
   x = 51,083,139.42/7,123.29
6. Step 6: Final answer
   x = 7,171.28