Finding the Fourth Proportional to 7,254.27, 9,945.70 and 7,123.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,254.27 : 9,945.70 = 7,123.05 : x
2. Step 2: Convert to fraction form
   7,254.27/9,945.70 = 7,123.05/x
3. Step 3: Cross multiply
   7,254.27x = 9,945.70 × 7,123.05
4. Step 4: Simplify right side
   7,254.27x = 70,843,764.59
5. Step 5: Solve for x
   x = 70,843,764.59/7,254.27
6. Step 6: Final answer
   x = 9,765.80