Finding the Fourth Proportional to 9,022.05, 13,499.87 and 7,939.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.05 : 13,499.87 = 7,939.49 : x
2. Step 2: Convert to fraction form
   9,022.05/13,499.87 = 7,939.49/x
3. Step 3: Cross multiply
   9,022.05x = 13,499.87 × 7,939.49
4. Step 4: Simplify right side
   9,022.05x = 107,181,975.67
5. Step 5: Solve for x
   x = 107,181,975.67/9,022.05
6. Step 6: Final answer
   x = 11,880.00