Finding the Fourth Proportional to 10,531, 15,786.78 and 3,952.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,531 : 15,786.78 = 3,952.72 : x
2. Step 2: Convert to fraction form
   10,531/15,786.78 = 3,952.72/x
3. Step 3: Cross multiply
   10,531x = 15,786.78 × 3,952.72
4. Step 4: Simplify right side
   10,531x = 62,400,721.04
5. Step 5: Solve for x
   x = 62,400,721.04/10,531
6. Step 6: Final answer
   x = 5,925.43