Finding the Fourth Proportional to 7,044.32, 9,721.46 and 3,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,044.32 : 9,721.46 = 3,900.50 : x
2. Step 2: Convert to fraction form
   7,044.32/9,721.46 = 3,900.50/x
3. Step 3: Cross multiply
   7,044.32x = 9,721.46 × 3,900.50
4. Step 4: Simplify right side
   7,044.32x = 37,918,554.73
5. Step 5: Solve for x
   x = 37,918,554.73/7,044.32
6. Step 6: Final answer
   x = 5,382.86