Finding the Fourth Proportional to 9,879.03, 13,633.99 and 5,630.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,879.03 : 13,633.99 = 5,630.31 : x
2. Step 2: Convert to fraction form
   9,879.03/13,633.99 = 5,630.31/x
3. Step 3: Cross multiply
   9,879.03x = 13,633.99 × 5,630.31
4. Step 4: Simplify right side
   9,879.03x = 76,763,576.16
5. Step 5: Solve for x
   x = 76,763,576.16/9,879.03
6. Step 6: Final answer
   x = 7,770.36