Finding the Fourth Proportional to 14,378.34, 19,836.72 and 8,408.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,378.34 : 19,836.72 = 8,408.10 : x
2. Step 2: Convert to fraction form
   14,378.34/19,836.72 = 8,408.10/x
3. Step 3: Cross multiply
   14,378.34x = 19,836.72 × 8,408.10
4. Step 4: Simplify right side
   14,378.34x = 166,789,125.43
5. Step 5: Solve for x
   x = 166,789,125.43/14,378.34
6. Step 6: Final answer
   x = 11,600.03