Finding the Fourth Proportional to 14,146.82, 21,222.96 and 5,381.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,146.82 : 21,222.96 = 5,381.05 : x
2. Step 2: Convert to fraction form
   14,146.82/21,222.96 = 5,381.05/x
3. Step 3: Cross multiply
   14,146.82x = 21,222.96 × 5,381.05
4. Step 4: Simplify right side
   14,146.82x = 114,201,808.91
5. Step 5: Solve for x
   x = 114,201,808.91/14,146.82
6. Step 6: Final answer
   x = 8,072.61