Finding the Fourth Proportional to 13,110, 18,091.68 and 7,804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,110 : 18,091.68 = 7,804.72 : x
2. Step 2: Convert to fraction form
   13,110/18,091.68 = 7,804.72/x
3. Step 3: Cross multiply
   13,110x = 18,091.68 × 7,804.72
4. Step 4: Simplify right side
   13,110x = 141,200,496.73
5. Step 5: Solve for x
   x = 141,200,496.73/13,110
6. Step 6: Final answer
   x = 10,770.44