Finding the Fourth Proportional to 13,055.47, 18,016.50 and 7,087.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.47 : 18,016.50 = 7,087.08 : x
2. Step 2: Convert to fraction form
   13,055.47/18,016.50 = 7,087.08/x
3. Step 3: Cross multiply
   13,055.47x = 18,016.50 × 7,087.08
4. Step 4: Simplify right side
   13,055.47x = 127,684,470.96
5. Step 5: Solve for x
   x = 127,684,470.96/13,055.47
6. Step 6: Final answer
   x = 9,780.15