Finding the Fourth Proportional to 10,086.69, 13,919.97 and 5,549.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.69 : 13,919.97 = 5,549.55 : x
2. Step 2: Convert to fraction form
   10,086.69/13,919.97 = 5,549.55/x
3. Step 3: Cross multiply
   10,086.69x = 13,919.97 × 5,549.55
4. Step 4: Simplify right side
   10,086.69x = 77,249,569.51
5. Step 5: Solve for x
   x = 77,249,569.51/10,086.69
6. Step 6: Final answer
   x = 7,658.56