Finding the Fourth Proportional to 10,956.53, 16,442.72 and 4,384.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.53 : 16,442.72 = 4,384.55 : x
2. Step 2: Convert to fraction form
   10,956.53/16,442.72 = 4,384.55/x
3. Step 3: Cross multiply
   10,956.53x = 16,442.72 × 4,384.55
4. Step 4: Simplify right side
   10,956.53x = 72,093,927.98
5. Step 5: Solve for x
   x = 72,093,927.98/10,956.53
6. Step 6: Final answer
   x = 6,580.00