Finding the Fourth Proportional to 13,086.46, 18,059.41 and 7,118.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.46 : 18,059.41 = 7,118.18 : x
2. Step 2: Convert to fraction form
   13,086.46/18,059.41 = 7,118.18/x
3. Step 3: Cross multiply
   13,086.46x = 18,059.41 × 7,118.18
4. Step 4: Simplify right side
   13,086.46x = 128,550,131.07
5. Step 5: Solve for x
   x = 128,550,131.07/13,086.46
6. Step 6: Final answer
   x = 9,823.14