Finding the Fourth Proportional to 13,738.31, 18,958.88 and 7,450.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,738.31 : 18,958.88 = 7,450.69 : x
2. Step 2: Convert to fraction form
   13,738.31/18,958.88 = 7,450.69/x
3. Step 3: Cross multiply
   13,738.31x = 18,958.88 × 7,450.69
4. Step 4: Simplify right side
   13,738.31x = 141,256,708.86
5. Step 5: Solve for x
   x = 141,256,708.86/13,738.31
6. Step 6: Final answer
   x = 10,281.95