Finding the Fourth Proportional to 14,490, 21,738.72 and 4,101.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,490 : 21,738.72 = 4,101.72 : x
2. Step 2: Convert to fraction form
   14,490/21,738.72 = 4,101.72/x
3. Step 3: Cross multiply
   14,490x = 21,738.72 × 4,101.72
4. Step 4: Simplify right side
   14,490x = 89,166,142.60
5. Step 5: Solve for x
   x = 89,166,142.60/14,490
6. Step 6: Final answer
   x = 6,153.63