Finding the Fourth Proportional to 7,139.63, 9,852.69 and 3,996.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.63 : 9,852.69 = 3,996.83 : x
2. Step 2: Convert to fraction form
   7,139.63/9,852.69 = 3,996.83/x
3. Step 3: Cross multiply
   7,139.63x = 9,852.69 × 3,996.83
4. Step 4: Simplify right side
   7,139.63x = 39,379,477.71
5. Step 5: Solve for x
   x = 39,379,477.71/7,139.63
6. Step 6: Final answer
   x = 5,515.62