Finding the Fourth Proportional to 10,116.80, 13,961.03 and 5,640.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,116.80 : 13,961.03 = 5,640.83 : x
2. Step 2: Convert to fraction form
   10,116.80/13,961.03 = 5,640.83/x
3. Step 3: Cross multiply
   10,116.80x = 13,961.03 × 5,640.83
4. Step 4: Simplify right side
   10,116.80x = 78,751,698.85
5. Step 5: Solve for x
   x = 78,751,698.85/10,116.80
6. Step 6: Final answer
   x = 7,784.25