Finding the Fourth Proportional to 14,379.06, 19,844.64 and 8,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,379.06 : 19,844.64 = 8,412.72 : x
2. Step 2: Convert to fraction form
   14,379.06/19,844.64 = 8,412.72/x
3. Step 3: Cross multiply
   14,379.06x = 19,844.64 × 8,412.72
4. Step 4: Simplify right side
   14,379.06x = 166,947,399.82
5. Step 5: Solve for x
   x = 166,947,399.82/14,379.06
6. Step 6: Final answer
   x = 11,610.45