Finding the Fourth Proportional to 13,719.42, 18,932.67 and 8,054.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,719.42 : 18,932.67 = 8,054.28 : x
2. Step 2: Convert to fraction form
   13,719.42/18,932.67 = 8,054.28/x
3. Step 3: Cross multiply
   13,719.42x = 18,932.67 × 8,054.28
4. Step 4: Simplify right side
   13,719.42x = 152,489,025.33
5. Step 5: Solve for x
   x = 152,489,025.33/13,719.42
6. Step 6: Final answer
   x = 11,114.83