Finding the Fourth Proportional to 12,867, 19,302.52 and 5,471.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,867 : 19,302.52 = 5,471.50 : x
2. Step 2: Convert to fraction form
   12,867/19,302.52 = 5,471.50/x
3. Step 3: Cross multiply
   12,867x = 19,302.52 × 5,471.50
4. Step 4: Simplify right side
   12,867x = 105,613,738.18
5. Step 5: Solve for x
   x = 105,613,738.18/12,867
6. Step 6: Final answer
   x = 8,208.11