Finding the Fourth Proportional to 13,111.98, 18,091.32 and 8,010.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.98 : 18,091.32 = 8,010.18 : x
2. Step 2: Convert to fraction form
   13,111.98/18,091.32 = 8,010.18/x
3. Step 3: Cross multiply
   13,111.98x = 18,091.32 × 8,010.18
4. Step 4: Simplify right side
   13,111.98x = 144,914,729.64
5. Step 5: Solve for x
   x = 144,914,729.64/13,111.98
6. Step 6: Final answer
   x = 11,052.09