Finding the Fourth Proportional to 10,421.22, 14,381.31 and 5,705.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,421.22 : 14,381.31 = 5,705.54 : x
2. Step 2: Convert to fraction form
   10,421.22/14,381.31 = 5,705.54/x
3. Step 3: Cross multiply
   10,421.22x = 14,381.31 × 5,705.54
4. Step 4: Simplify right side
   10,421.22x = 82,053,067.55
5. Step 5: Solve for x
   x = 82,053,067.55/10,421.22
6. Step 6: Final answer
   x = 7,873.65