Finding the Fourth Proportional to 9,019.76, 12,443.74 and 5,242.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.76 : 12,443.74 = 5,242.25 : x
2. Step 2: Convert to fraction form
   9,019.76/12,443.74 = 5,242.25/x
3. Step 3: Cross multiply
   9,019.76x = 12,443.74 × 5,242.25
4. Step 4: Simplify right side
   9,019.76x = 65,233,243.51
5. Step 5: Solve for x
   x = 65,233,243.51/9,019.76
6. Step 6: Final answer
   x = 7,232.26