Finding the Fourth Proportional to 13,054.50, 18,015.12 and 7,086.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.50 : 18,015.12 = 7,086.33 : x
2. Step 2: Convert to fraction form
   13,054.50/18,015.12 = 7,086.33/x
3. Step 3: Cross multiply
   13,054.50x = 18,015.12 × 7,086.33
4. Step 4: Simplify right side
   13,054.50x = 127,661,085.31
5. Step 5: Solve for x
   x = 127,661,085.31/13,054.50
6. Step 6: Final answer
   x = 9,779.09