Finding the Fourth Proportional to 43,978.24, 65,972.83 and 14,388.12

Step by Step Solution

1. Step 1: Write the proportion equation
   43,978.24 : 65,972.83 = 14,388.12 : x
2. Step 2: Convert to fraction form
   43,978.24/65,972.83 = 14,388.12/x
3. Step 3: Cross multiply
   43,978.24x = 65,972.83 × 14,388.12
4. Step 4: Simplify right side
   43,978.24x = 949,224,994.78
5. Step 5: Solve for x
   x = 949,224,994.78/43,978.24
6. Step 6: Final answer
   x = 21,583.97