Finding the Fourth Proportional to 14,123.69, 21,185.69 and 4,263.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,123.69 : 21,185.69 = 4,263.05 : x
2. Step 2: Convert to fraction form
   14,123.69/21,185.69 = 4,263.05/x
3. Step 3: Cross multiply
   14,123.69x = 21,185.69 × 4,263.05
4. Step 4: Simplify right side
   14,123.69x = 90,315,687.40
5. Step 5: Solve for x
   x = 90,315,687.40/14,123.69
6. Step 6: Final answer
   x = 6,394.62