Finding the Fourth Proportional to 9,928.89, 14,888.70 and 3,353.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.89 : 14,888.70 = 3,353.31 : x
2. Step 2: Convert to fraction form
   9,928.89/14,888.70 = 3,353.31/x
3. Step 3: Cross multiply
   9,928.89x = 14,888.70 × 3,353.31
4. Step 4: Simplify right side
   9,928.89x = 49,926,426.60
5. Step 5: Solve for x
   x = 49,926,426.60/9,928.89
6. Step 6: Final answer
   x = 5,028.40