Finding the Fourth Proportional to 13,054.46, 18,015.28 and 7,086.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.46 : 18,015.28 = 7,086.17 : x
2. Step 2: Convert to fraction form
   13,054.46/18,015.28 = 7,086.17/x
3. Step 3: Cross multiply
   13,054.46x = 18,015.28 × 7,086.17
4. Step 4: Simplify right side
   13,054.46x = 127,659,364.00
5. Step 5: Solve for x
   x = 127,659,364.00/13,054.46
6. Step 6: Final answer
   x = 9,778.99