Finding the Fourth Proportional to 9,021.51, 12,449.31 and 5,244.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.51 : 12,449.31 = 5,244.50 : x
2. Step 2: Convert to fraction form
   9,021.51/12,449.31 = 5,244.50/x
3. Step 3: Cross multiply
   9,021.51x = 12,449.31 × 5,244.50
4. Step 4: Simplify right side
   9,021.51x = 65,290,377.22
5. Step 5: Solve for x
   x = 65,290,377.22/9,021.51
6. Step 6: Final answer
   x = 7,237.19