Finding the Fourth Proportional to 13,086.51, 18,059.33 and 7,118.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.51 : 18,059.33 = 7,118.24 : x
2. Step 2: Convert to fraction form
   13,086.51/18,059.33 = 7,118.24/x
3. Step 3: Cross multiply
   13,086.51x = 18,059.33 × 7,118.24
4. Step 4: Simplify right side
   13,086.51x = 128,550,519.29
5. Step 5: Solve for x
   x = 128,550,519.29/13,086.51
6. Step 6: Final answer
   x = 9,823.13