Finding the Fourth Proportional to 13,739.61, 18,960.83 and 7,452.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,739.61 : 18,960.83 = 7,452.09 : x
2. Step 2: Convert to fraction form
   13,739.61/18,960.83 = 7,452.09/x
3. Step 3: Cross multiply
   13,739.61x = 18,960.83 × 7,452.09
4. Step 4: Simplify right side
   13,739.61x = 141,297,774.37
5. Step 5: Solve for x
   x = 141,297,774.37/13,739.61
6. Step 6: Final answer
   x = 10,283.97