Finding the Fourth Proportional to 14,081.61, 21,119.72 and 4,220.89

Step by Step Solution

1. Step 1: Write the proportion equation
   14,081.61 : 21,119.72 = 4,220.89 : x
2. Step 2: Convert to fraction form
   14,081.61/21,119.72 = 4,220.89/x
3. Step 3: Cross multiply
   14,081.61x = 21,119.72 × 4,220.89
4. Step 4: Simplify right side
   14,081.61x = 89,143,909.35
5. Step 5: Solve for x
   x = 89,143,909.35/14,081.61
6. Step 6: Final answer
   x = 6,330.52