Finding the Fourth Proportional to 13,404.56, 18,498.92 and 8,371.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.56 : 18,498.92 = 8,371.76 : x
2. Step 2: Convert to fraction form
   13,404.56/18,498.92 = 8,371.76/x
3. Step 3: Cross multiply
   13,404.56x = 18,498.92 × 8,371.76
4. Step 4: Simplify right side
   13,404.56x = 154,868,518.50
5. Step 5: Solve for x
   x = 154,868,518.50/13,404.56
6. Step 6: Final answer
   x = 11,553.42