Finding the Fourth Proportional to 13,404.42, 18,498.59 and 8,098.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.42 : 18,498.59 = 8,098.21 : x
2. Step 2: Convert to fraction form
   13,404.42/18,498.59 = 8,098.21/x
3. Step 3: Cross multiply
   13,404.42x = 18,498.59 × 8,098.21
4. Step 4: Simplify right side
   13,404.42x = 149,805,440.52
5. Step 5: Solve for x
   x = 149,805,440.52/13,404.42
6. Step 6: Final answer
   x = 11,175.82