Finding the Fourth Proportional to 13,404.79, 18,499.11 and 8,098.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.79 : 18,499.11 = 8,098.58 : x
2. Step 2: Convert to fraction form
   13,404.79/18,499.11 = 8,098.58/x
3. Step 3: Cross multiply
   13,404.79x = 18,499.11 × 8,098.58
4. Step 4: Simplify right side
   13,404.79x = 149,816,538.14
5. Step 5: Solve for x
   x = 149,816,538.14/13,404.79
6. Step 6: Final answer
   x = 11,176.34