Finding the Fourth Proportional to 13,081.83, 18,052.88 and 7,707.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.83 : 18,052.88 = 7,707.39 : x
2. Step 2: Convert to fraction form
   13,081.83/18,052.88 = 7,707.39/x
3. Step 3: Cross multiply
   13,081.83x = 18,052.88 × 7,707.39
4. Step 4: Simplify right side
   13,081.83x = 139,140,548.25
5. Step 5: Solve for x
   x = 139,140,548.25/13,081.83
6. Step 6: Final answer
   x = 10,636.17