Finding the Fourth Proportional to 9,989.98, 14,986.58 and 3,750.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989.98 : 14,986.58 = 3,750.47 : x
2. Step 2: Convert to fraction form
   9,989.98/14,986.58 = 3,750.47/x
3. Step 3: Cross multiply
   9,989.98x = 14,986.58 × 3,750.47
4. Step 4: Simplify right side
   9,989.98x = 56,206,718.69
5. Step 5: Solve for x
   x = 56,206,718.69/9,989.98
6. Step 6: Final answer
   x = 5,626.31