Finding the Fourth Proportional to 10,635.38, 15,951.31 and 3,970.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,635.38 : 15,951.31 = 3,970.12 : x
2. Step 2: Convert to fraction form
   10,635.38/15,951.31 = 3,970.12/x
3. Step 3: Cross multiply
   10,635.38x = 15,951.31 × 3,970.12
4. Step 4: Simplify right side
   10,635.38x = 63,328,662.16
5. Step 5: Solve for x
   x = 63,328,662.16/10,635.38
6. Step 6: Final answer
   x = 5,954.53