Finding the Fourth Proportional to 13,112.03, 18,093.21 and 7,806.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.03 : 18,093.21 = 7,806.12 : x
2. Step 2: Convert to fraction form
   13,112.03/18,093.21 = 7,806.12/x
3. Step 3: Cross multiply
   13,112.03x = 18,093.21 × 7,806.12
4. Step 4: Simplify right side
   13,112.03x = 141,237,768.45
5. Step 5: Solve for x
   x = 141,237,768.45/13,112.03
6. Step 6: Final answer
   x = 10,771.62