Finding the Fourth Proportional to 13,080.73, 18,051.42 and 7,112.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.73 : 18,051.42 = 7,112.38 : x
2. Step 2: Convert to fraction form
   13,080.73/18,051.42 = 7,112.38/x
3. Step 3: Cross multiply
   13,080.73x = 18,051.42 × 7,112.38
4. Step 4: Simplify right side
   13,080.73x = 128,388,558.58
5. Step 5: Solve for x
   x = 128,388,558.58/13,080.73
6. Step 6: Final answer
   x = 9,815.09