Finding the Fourth Proportional to 9,958.02, 14,928.80 and 5,515.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,958.02 : 14,928.80 = 5,515.49 : x
2. Step 2: Convert to fraction form
   9,958.02/14,928.80 = 5,515.49/x
3. Step 3: Cross multiply
   9,958.02x = 14,928.80 × 5,515.49
4. Step 4: Simplify right side
   9,958.02x = 82,339,544.89
5. Step 5: Solve for x
   x = 82,339,544.89/9,958.02
6. Step 6: Final answer
   x = 8,268.67