Finding the Fourth Proportional to 13,055.58, 18,016.56 and 7,087.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.58 : 18,016.56 = 7,087.34 : x
2. Step 2: Convert to fraction form
   13,055.58/18,016.56 = 7,087.34/x
3. Step 3: Cross multiply
   13,055.58x = 18,016.56 × 7,087.34
4. Step 4: Simplify right side
   13,055.58x = 127,689,486.35
5. Step 5: Solve for x
   x = 127,689,486.35/13,055.58
6. Step 6: Final answer
   x = 9,780.45