Finding the Fourth Proportional to 12,866.50, 19,332.02 and 8,188.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866.50 : 19,332.02 = 8,188.53 : x
2. Step 2: Convert to fraction form
   12,866.50/19,332.02 = 8,188.53/x
3. Step 3: Cross multiply
   12,866.50x = 19,332.02 × 8,188.53
4. Step 4: Simplify right side
   12,866.50x = 158,300,825.73
5. Step 5: Solve for x
   x = 158,300,825.73/12,866.50
6. Step 6: Final answer
   x = 12,303.33