Finding the Fourth Proportional to 14,346.30, 21,520.69 and 3,958.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,346.30 : 21,520.69 = 3,958.05 : x
2. Step 2: Convert to fraction form
   14,346.30/21,520.69 = 3,958.05/x
3. Step 3: Cross multiply
   14,346.30x = 21,520.69 × 3,958.05
4. Step 4: Simplify right side
   14,346.30x = 85,179,893.46
5. Step 5: Solve for x
   x = 85,179,893.46/14,346.30
6. Step 6: Final answer
   x = 5,937.41