Finding the Fourth Proportional to 9,990.89, 14,983.91 and 4,725.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.89 : 14,983.91 = 4,725.69 : x
2. Step 2: Convert to fraction form
   9,990.89/14,983.91 = 4,725.69/x
3. Step 3: Cross multiply
   9,990.89x = 14,983.91 × 4,725.69
4. Step 4: Simplify right side
   9,990.89x = 70,809,290.02
5. Step 5: Solve for x
   x = 70,809,290.02/9,990.89
6. Step 6: Final answer
   x = 7,087.39