Finding the Fourth Proportional to 7,123.50, 10,685.12 and 2,741.90

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.50 : 10,685.12 = 2,741.90 : x
2. Step 2: Convert to fraction form
   7,123.50/10,685.12 = 2,741.90/x
3. Step 3: Cross multiply
   7,123.50x = 10,685.12 × 2,741.90
4. Step 4: Simplify right side
   7,123.50x = 29,297,564.10
5. Step 5: Solve for x
   x = 29,297,564.10/7,123.50
6. Step 6: Final answer
   x = 4,112.80