Finding the Fourth Proportional to 9,429.73, 14,139.76 and 4,989.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.73 : 14,139.76 = 4,989.79 : x
2. Step 2: Convert to fraction form
   9,429.73/14,139.76 = 4,989.79/x
3. Step 3: Cross multiply
   9,429.73x = 14,139.76 × 4,989.79
4. Step 4: Simplify right side
   9,429.73x = 70,554,433.05
5. Step 5: Solve for x
   x = 70,554,433.05/9,429.73
6. Step 6: Final answer
   x = 7,482.13