Finding the Fourth Proportional to 9,123.48, 12,589.73 and 5,346.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.48 : 12,589.73 = 5,346.42 : x
2. Step 2: Convert to fraction form
   9,123.48/12,589.73 = 5,346.42/x
3. Step 3: Cross multiply
   9,123.48x = 12,589.73 × 5,346.42
4. Step 4: Simplify right side
   9,123.48x = 67,309,984.27
5. Step 5: Solve for x
   x = 67,309,984.27/9,123.48
6. Step 6: Final answer
   x = 7,377.67