Finding the Fourth Proportional to 8,713.50, 12,019.32 and 5,174.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,713.50 : 12,019.32 = 5,174.34 : x
2. Step 2: Convert to fraction form
   8,713.50/12,019.32 = 5,174.34/x
3. Step 3: Cross multiply
   8,713.50x = 12,019.32 × 5,174.34
4. Step 4: Simplify right side
   8,713.50x = 62,192,048.25
5. Step 5: Solve for x
   x = 62,192,048.25/8,713.50
6. Step 6: Final answer
   x = 7,137.44