Finding the Fourth Proportional to 13,100.07, 18,078.49 and 7,434.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.07 : 18,078.49 = 7,434.71 : x
2. Step 2: Convert to fraction form
   13,100.07/18,078.49 = 7,434.71/x
3. Step 3: Cross multiply
   13,100.07x = 18,078.49 × 7,434.71
4. Step 4: Simplify right side
   13,100.07x = 134,408,330.39
5. Step 5: Solve for x
   x = 134,408,330.39/13,100.07
6. Step 6: Final answer
   x = 10,260.12