Finding the Fourth Proportional to 13,081.05, 18,051.48 and 7,112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.05 : 18,051.48 = 7,112.52 : x
2. Step 2: Convert to fraction form
   13,081.05/18,051.48 = 7,112.52/x
3. Step 3: Cross multiply
   13,081.05x = 18,051.48 × 7,112.52
4. Step 4: Simplify right side
   13,081.05x = 128,391,512.53
5. Step 5: Solve for x
   x = 128,391,512.53/13,081.05
6. Step 6: Final answer
   x = 9,815.08