Finding the Fourth Proportional to 9,048.83, 12,488.31 and 5,220.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,048.83 : 12,488.31 = 5,220.61 : x
2. Step 2: Convert to fraction form
   9,048.83/12,488.31 = 5,220.61/x
3. Step 3: Cross multiply
   9,048.83x = 12,488.31 × 5,220.61
4. Step 4: Simplify right side
   9,048.83x = 65,196,596.07
5. Step 5: Solve for x
   x = 65,196,596.07/9,048.83
6. Step 6: Final answer
   x = 7,204.98