Finding the Fourth Proportional to 14,105.41, 21,153.85 and 4,242.07

Step by Step Solution

1. Step 1: Write the proportion equation
   14,105.41 : 21,153.85 = 4,242.07 : x
2. Step 2: Convert to fraction form
   14,105.41/21,153.85 = 4,242.07/x
3. Step 3: Cross multiply
   14,105.41x = 21,153.85 × 4,242.07
4. Step 4: Simplify right side
   14,105.41x = 89,736,112.47
5. Step 5: Solve for x
   x = 89,736,112.47/14,105.41
6. Step 6: Final answer
   x = 6,361.82