Finding the Fourth Proportional to 7,146.78, 10,723.83 and 3,402.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,146.78 : 10,723.83 = 3,402.79 : x
2. Step 2: Convert to fraction form
   7,146.78/10,723.83 = 3,402.79/x
3. Step 3: Cross multiply
   7,146.78x = 10,723.83 × 3,402.79
4. Step 4: Simplify right side
   7,146.78x = 36,490,941.49
5. Step 5: Solve for x
   x = 36,490,941.49/7,146.78
6. Step 6: Final answer
   x = 5,105.93