Finding the Fourth Proportional to 13,096.98, 18,061.38 and 8,618.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.98 : 18,061.38 = 8,618.76 : x
2. Step 2: Convert to fraction form
   13,096.98/18,061.38 = 8,618.76/x
3. Step 3: Cross multiply
   13,096.98x = 18,061.38 × 8,618.76
4. Step 4: Simplify right side
   13,096.98x = 155,666,699.49
5. Step 5: Solve for x
   x = 155,666,699.49/13,096.98
6. Step 6: Final answer
   x = 11,885.69