Finding the Fourth Proportional to 13,158.38, 19,738.89 and 4,273.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.38 : 19,738.89 = 4,273.34 : x
2. Step 2: Convert to fraction form
   13,158.38/19,738.89 = 4,273.34/x
3. Step 3: Cross multiply
   13,158.38x = 19,738.89 × 4,273.34
4. Step 4: Simplify right side
   13,158.38x = 84,350,889.50
5. Step 5: Solve for x
   x = 84,350,889.50/13,158.38
6. Step 6: Final answer
   x = 6,410.43