Finding the Fourth Proportional to 13,055.59, 18,016.55 and 7,087.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.59 : 18,016.55 = 7,087.34 : x
2. Step 2: Convert to fraction form
   13,055.59/18,016.55 = 7,087.34/x
3. Step 3: Cross multiply
   13,055.59x = 18,016.55 × 7,087.34
4. Step 4: Simplify right side
   13,055.59x = 127,689,415.48
5. Step 5: Solve for x
   x = 127,689,415.48/13,055.59
6. Step 6: Final answer
   x = 9,780.44