Finding the Fourth Proportional to 10,085.99, 13,919.81 and 5,779.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.99 : 13,919.81 = 5,779.49 : x
2. Step 2: Convert to fraction form
   10,085.99/13,919.81 = 5,779.49/x
3. Step 3: Cross multiply
   10,085.99x = 13,919.81 × 5,779.49
4. Step 4: Simplify right side
   10,085.99x = 80,449,304.20
5. Step 5: Solve for x
   x = 80,449,304.20/10,085.99
6. Step 6: Final answer
   x = 7,976.35