Finding the Fourth Proportional to 13,019.58, 19,529.20 and 3,158.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.58 : 19,529.20 = 3,158.94 : x
2. Step 2: Convert to fraction form
   13,019.58/19,529.20 = 3,158.94/x
3. Step 3: Cross multiply
   13,019.58x = 19,529.20 × 3,158.94
4. Step 4: Simplify right side
   13,019.58x = 61,691,571.05
5. Step 5: Solve for x
   x = 61,691,571.05/13,019.58
6. Step 6: Final answer
   x = 4,738.37