Finding the Fourth Proportional to 9,928.10, 13,713.00 and 7,421.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.10 : 13,713.00 = 7,421.41 : x
2. Step 2: Convert to fraction form
   9,928.10/13,713.00 = 7,421.41/x
3. Step 3: Cross multiply
   9,928.10x = 13,713.00 × 7,421.41
4. Step 4: Simplify right side
   9,928.10x = 101,769,707.51
5. Step 5: Solve for x
   x = 101,769,707.51/9,928.10
6. Step 6: Final answer
   x = 10,250.67