Finding the Fourth Proportional to 10,770.91, 16,144.72 and 5,212.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,770.91 : 16,144.72 = 5,212.49 : x
2. Step 2: Convert to fraction form
   10,770.91/16,144.72 = 5,212.49/x
3. Step 3: Cross multiply
   10,770.91x = 16,144.72 × 5,212.49
4. Step 4: Simplify right side
   10,770.91x = 84,154,097.80
5. Step 5: Solve for x
   x = 84,154,097.80/10,770.91
6. Step 6: Final answer
   x = 7,813.09