Finding the Fourth Proportional to 13,083.13, 18,055.06 and 7,115.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,083.13 : 18,055.06 = 7,115.15 : x
2. Step 2: Convert to fraction form
   13,083.13/18,055.06 = 7,115.15/x
3. Step 3: Cross multiply
   13,083.13x = 18,055.06 × 7,115.15
4. Step 4: Simplify right side
   13,083.13x = 128,464,460.16
5. Step 5: Solve for x
   x = 128,464,460.16/13,083.13
6. Step 6: Final answer
   x = 9,819.09