Finding the Fourth Proportional to 13,105.31, 18,082.50 and 7,799.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.31 : 18,082.50 = 7,799.09 : x
2. Step 2: Convert to fraction form
   13,105.31/18,082.50 = 7,799.09/x
3. Step 3: Cross multiply
   13,105.31x = 18,082.50 × 7,799.09
4. Step 4: Simplify right side
   13,105.31x = 141,026,954.51
5. Step 5: Solve for x
   x = 141,026,954.51/13,105.31
6. Step 6: Final answer
   x = 10,761.06