Finding the Fourth Proportional to 13,836.58, 19,096.83 and 8,172.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,836.58 : 19,096.83 = 8,172.76 : x
2. Step 2: Convert to fraction form
   13,836.58/19,096.83 = 8,172.76/x
3. Step 3: Cross multiply
   13,836.58x = 19,096.83 × 8,172.76
4. Step 4: Simplify right side
   13,836.58x = 156,073,808.35
5. Step 5: Solve for x
   x = 156,073,808.35/13,836.58
6. Step 6: Final answer
   x = 11,279.80