Finding the Fourth Proportional to 10,531.77, 15,787.89 and 3,962.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,531.77 : 15,787.89 = 3,962.31 : x
2. Step 2: Convert to fraction form
   10,531.77/15,787.89 = 3,962.31/x
3. Step 3: Cross multiply
   10,531.77x = 15,787.89 × 3,962.31
4. Step 4: Simplify right side
   10,531.77x = 62,556,514.43
5. Step 5: Solve for x
   x = 62,556,514.43/10,531.77
6. Step 6: Final answer
   x = 5,939.79