Finding the Fourth Proportional to 7,123.50, 10,687.56 and 3,426.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.50 : 10,687.56 = 3,426.02 : x
2. Step 2: Convert to fraction form
   7,123.50/10,687.56 = 3,426.02/x
3. Step 3: Cross multiply
   7,123.50x = 10,687.56 × 3,426.02
4. Step 4: Simplify right side
   7,123.50x = 36,615,794.31
5. Step 5: Solve for x
   x = 36,615,794.31/7,123.50
6. Step 6: Final answer
   x = 5,140.14