Finding the Fourth Proportional to 13,080.33, 18,050.81 and 7,705.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.33 : 18,050.81 = 7,705.89 : x
2. Step 2: Convert to fraction form
   13,080.33/18,050.81 = 7,705.89/x
3. Step 3: Cross multiply
   13,080.33x = 18,050.81 × 7,705.89
4. Step 4: Simplify right side
   13,080.33x = 139,097,517.74
5. Step 5: Solve for x
   x = 139,097,517.74/13,080.33
6. Step 6: Final answer
   x = 10,634.10