Finding the Fourth Proportional to 10,086.78, 15,119.85 and 3,507.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.78 : 15,119.85 = 3,507.56 : x
2. Step 2: Convert to fraction form
   10,086.78/15,119.85 = 3,507.56/x
3. Step 3: Cross multiply
   10,086.78x = 15,119.85 × 3,507.56
4. Step 4: Simplify right side
   10,086.78x = 53,033,781.07
5. Step 5: Solve for x
   x = 53,033,781.07/10,086.78
6. Step 6: Final answer
   x = 5,257.75