Finding the Fourth Proportional to 13,085.99, 18,059.03 and 7,118.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.99 : 18,059.03 = 7,118.04 : x
2. Step 2: Convert to fraction form
   13,085.99/18,059.03 = 7,118.04/x
3. Step 3: Cross multiply
   13,085.99x = 18,059.03 × 7,118.04
4. Step 4: Simplify right side
   13,085.99x = 128,544,844.39
5. Step 5: Solve for x
   x = 128,544,844.39/13,085.99
6. Step 6: Final answer
   x = 9,823.09