Finding the Fourth Proportional to 14,144.07, 21,217.20 and 4,284.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,144.07 : 21,217.20 = 4,284.15 : x
2. Step 2: Convert to fraction form
   14,144.07/21,217.20 = 4,284.15/x
3. Step 3: Cross multiply
   14,144.07x = 21,217.20 × 4,284.15
4. Step 4: Simplify right side
   14,144.07x = 90,897,667.38
5. Step 5: Solve for x
   x = 90,897,667.38/14,144.07
6. Step 6: Final answer
   x = 6,426.56