Finding the Fourth Proportional to 8,123.72, 12,181.74 and 3,739.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.72 : 12,181.74 = 3,739.88 : x
2. Step 2: Convert to fraction form
   8,123.72/12,181.74 = 3,739.88/x
3. Step 3: Cross multiply
   8,123.72x = 12,181.74 × 3,739.88
4. Step 4: Simplify right side
   8,123.72x = 45,558,245.79
5. Step 5: Solve for x
   x = 45,558,245.79/8,123.72
6. Step 6: Final answer
   x = 5,608.05