Finding the Fourth Proportional to 14,477.76, 19,978.20 and 8,104.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,477.76 : 19,978.20 = 8,104.32 : x
2. Step 2: Convert to fraction form
   14,477.76/19,978.20 = 8,104.32/x
3. Step 3: Cross multiply
   14,477.76x = 19,978.20 × 8,104.32
4. Step 4: Simplify right side
   14,477.76x = 161,909,725.82
5. Step 5: Solve for x
   x = 161,909,725.82/14,477.76
6. Step 6: Final answer
   x = 11,183.34