Finding the Fourth Proportional to 14,264.86, 19,686.56 and 8,216.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,264.86 : 19,686.56 = 8,216.15 : x
2. Step 2: Convert to fraction form
   14,264.86/19,686.56 = 8,216.15/x
3. Step 3: Cross multiply
   14,264.86x = 19,686.56 × 8,216.15
4. Step 4: Simplify right side
   14,264.86x = 161,747,729.94
5. Step 5: Solve for x
   x = 161,747,729.94/14,264.86
6. Step 6: Final answer
   x = 11,338.89