Finding the Fourth Proportional to 8,230.47, 12,321.48 and 5,100.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,230.47 : 12,321.48 = 5,100.42 : x
2. Step 2: Convert to fraction form
   8,230.47/12,321.48 = 5,100.42/x
3. Step 3: Cross multiply
   8,230.47x = 12,321.48 × 5,100.42
4. Step 4: Simplify right side
   8,230.47x = 62,844,723.02
5. Step 5: Solve for x
   x = 62,844,723.02/8,230.47
6. Step 6: Final answer
   x = 7,635.62