Finding the Fourth Proportional to 10,640.01, 15,949.56 and 3,971.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,640.01 : 15,949.56 = 3,971.62 : x
2. Step 2: Convert to fraction form
   10,640.01/15,949.56 = 3,971.62/x
3. Step 3: Cross multiply
   10,640.01x = 15,949.56 × 3,971.62
4. Step 4: Simplify right side
   10,640.01x = 63,345,551.61
5. Step 5: Solve for x
   x = 63,345,551.61/10,640.01
6. Step 6: Final answer
   x = 5,953.52