Finding the Fourth Proportional to 10,956.42, 16,440.15 and 4,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.42 : 16,440.15 = 4,384.50 : x
2. Step 2: Convert to fraction form
   10,956.42/16,440.15 = 4,384.50/x
3. Step 3: Cross multiply
   10,956.42x = 16,440.15 × 4,384.50
4. Step 4: Simplify right side
   10,956.42x = 72,081,837.68
5. Step 5: Solve for x
   x = 72,081,837.68/10,956.42
6. Step 6: Final answer
   x = 6,578.96