Finding the Fourth Proportional to 18,824.22, 25,978.86 and 10,440.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,824.22 : 25,978.86 = 10,440.72 : x
2. Step 2: Convert to fraction form
   18,824.22/25,978.86 = 10,440.72/x
3. Step 3: Cross multiply
   18,824.22x = 25,978.86 × 10,440.72
4. Step 4: Simplify right side
   18,824.22x = 271,238,003.18
5. Step 5: Solve for x
   x = 271,238,003.18/18,824.22
6. Step 6: Final answer
   x = 14,408.99