Finding the Fourth Proportional to 13,096.50, 18,075 and 8,390.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.50 : 18,075 = 8,390.81 : x
2. Step 2: Convert to fraction form
   13,096.50/18,075 = 8,390.81/x
3. Step 3: Cross multiply
   13,096.50x = 18,075 × 8,390.81
4. Step 4: Simplify right side
   13,096.50x = 151,663,800.38
5. Step 5: Solve for x
   x = 151,663,800.38/13,096.50
6. Step 6: Final answer
   x = 11,580.48