Finding the Fourth Proportional to 10,086.07, 13,919.29 and 5,609.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.07 : 13,919.29 = 5,609.91 : x
2. Step 2: Convert to fraction form
   10,086.07/13,919.29 = 5,609.91/x
3. Step 3: Cross multiply
   10,086.07x = 13,919.29 × 5,609.91
4. Step 4: Simplify right side
   10,086.07x = 78,085,894.57
5. Step 5: Solve for x
   x = 78,085,894.57/10,086.07
6. Step 6: Final answer
   x = 7,741.95