Finding the Fourth Proportional to 13,104.10, 18,079.57 and 7,438.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,104.10 : 18,079.57 = 7,438.56 : x
2. Step 2: Convert to fraction form
   13,104.10/18,079.57 = 7,438.56/x
3. Step 3: Cross multiply
   13,104.10x = 18,079.57 × 7,438.56
4. Step 4: Simplify right side
   13,104.10x = 134,485,966.22
5. Step 5: Solve for x
   x = 134,485,966.22/13,104.10
6. Step 6: Final answer
   x = 10,262.89