Finding the Fourth Proportional to 10,912.34, 16,368.55 and 4,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,912.34 : 16,368.55 = 4,338.50 : x
2. Step 2: Convert to fraction form
   10,912.34/16,368.55 = 4,338.50/x
3. Step 3: Cross multiply
   10,912.34x = 16,368.55 × 4,338.50
4. Step 4: Simplify right side
   10,912.34x = 71,014,861.49
5. Step 5: Solve for x
   x = 71,014,861.49/10,912.34
6. Step 6: Final answer
   x = 6,507.76