Finding the Fourth Proportional to 12,099.42, 18,142.56 and 3,777.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,099.42 : 18,142.56 = 3,777.17 : x
2. Step 2: Convert to fraction form
   12,099.42/18,142.56 = 3,777.17/x
3. Step 3: Cross multiply
   12,099.42x = 18,142.56 × 3,777.17
4. Step 4: Simplify right side
   12,099.42x = 68,527,442.64
5. Step 5: Solve for x
   x = 68,527,442.64/12,099.42
6. Step 6: Final answer
   x = 5,663.70