Finding the Fourth Proportional to 13,736.18, 18,955.82 and 7,767.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,736.18 : 18,955.82 = 7,767.96 : x
2. Step 2: Convert to fraction form
   13,736.18/18,955.82 = 7,767.96/x
3. Step 3: Cross multiply
   13,736.18x = 18,955.82 × 7,767.96
4. Step 4: Simplify right side
   13,736.18x = 147,248,012.69
5. Step 5: Solve for x
   x = 147,248,012.69/13,736.18
6. Step 6: Final answer
   x = 10,719.72