Finding the Fourth Proportional to 9,021.39, 12,449.91 and 5,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.39 : 12,449.91 = 5,042.50 : x
2. Step 2: Convert to fraction form
   9,021.39/12,449.91 = 5,042.50/x
3. Step 3: Cross multiply
   9,021.39x = 12,449.91 × 5,042.50
4. Step 4: Simplify right side
   9,021.39x = 62,778,683.39
5. Step 5: Solve for x
   x = 62,778,683.39/9,021.39
6. Step 6: Final answer
   x = 6,958.87