Finding the Fourth Proportional to 10,610.50, 15,915.78 and 3,685

Step by Step Solution

1. Step 1: Write the proportion equation
   10,610.50 : 15,915.78 = 3,685 : x
2. Step 2: Convert to fraction form
   10,610.50/15,915.78 = 3,685/x
3. Step 3: Cross multiply
   10,610.50x = 15,915.78 × 3,685
4. Step 4: Simplify right side
   10,610.50x = 58,649,649.30
5. Step 5: Solve for x
   x = 58,649,649.30/10,610.50
6. Step 6: Final answer
   x = 5,527.51