Finding the Fourth Proportional to 12,738.21, 19,099.88 and 3,850.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.21 : 19,099.88 = 3,850.89 : x
2. Step 2: Convert to fraction form
   12,738.21/19,099.88 = 3,850.89/x
3. Step 3: Cross multiply
   12,738.21x = 19,099.88 × 3,850.89
4. Step 4: Simplify right side
   12,738.21x = 73,551,557.06
5. Step 5: Solve for x
   x = 73,551,557.06/12,738.21
6. Step 6: Final answer
   x = 5,774.09