Finding the Fourth Proportional to 10,076.90, 15,115.50 and 3,503.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,076.90 : 15,115.50 = 3,503.31 : x
2. Step 2: Convert to fraction form
   10,076.90/15,115.50 = 3,503.31/x
3. Step 3: Cross multiply
   10,076.90x = 15,115.50 × 3,503.31
4. Step 4: Simplify right side
   10,076.90x = 52,954,282.31
5. Step 5: Solve for x
   x = 52,954,282.31/10,076.90
6. Step 6: Final answer
   x = 5,255.02