Finding the Fourth Proportional to 13,105.80, 18,083.18 and 7,799.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.80 : 18,083.18 = 7,799.58 : x
2. Step 2: Convert to fraction form
   13,105.80/18,083.18 = 7,799.58/x
3. Step 3: Cross multiply
   13,105.80x = 18,083.18 × 7,799.58
4. Step 4: Simplify right side
   13,105.80x = 141,041,209.06
5. Step 5: Solve for x
   x = 141,041,209.06/13,105.80
6. Step 6: Final answer
   x = 10,761.74