Finding the Fourth Proportional to 12,315.06, 18,472.48 and 8,356.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.06 : 18,472.48 = 8,356.52 : x
2. Step 2: Convert to fraction form
   12,315.06/18,472.48 = 8,356.52/x
3. Step 3: Cross multiply
   12,315.06x = 18,472.48 × 8,356.52
4. Step 4: Simplify right side
   12,315.06x = 154,365,673.86
5. Step 5: Solve for x
   x = 154,365,673.86/12,315.06
6. Step 6: Final answer
   x = 12,534.71