Finding the Fourth Proportional to 13,765.82, 18,996.83 and 7,478.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,765.82 : 18,996.83 = 7,478.19 : x
2. Step 2: Convert to fraction form
   13,765.82/18,996.83 = 7,478.19/x
3. Step 3: Cross multiply
   13,765.82x = 18,996.83 × 7,478.19
4. Step 4: Simplify right side
   13,765.82x = 142,061,904.14
5. Step 5: Solve for x
   x = 142,061,904.14/13,765.82
6. Step 6: Final answer
   x = 10,319.90