Finding the Fourth Proportional to 13,055.06, 18,016.17 and 7,086.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.06 : 18,016.17 = 7,086.74 : x
2. Step 2: Convert to fraction form
   13,055.06/18,016.17 = 7,086.74/x
3. Step 3: Cross multiply
   13,055.06x = 18,016.17 × 7,086.74
4. Step 4: Simplify right side
   13,055.06x = 127,675,912.59
5. Step 5: Solve for x
   x = 127,675,912.59/13,055.06
6. Step 6: Final answer
   x = 9,779.80