Finding the Fourth Proportional to 10,525.19, 15,779.50 and 5,257.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,525.19 : 15,779.50 = 5,257.48 : x
2. Step 2: Convert to fraction form
   10,525.19/15,779.50 = 5,257.48/x
3. Step 3: Cross multiply
   10,525.19x = 15,779.50 × 5,257.48
4. Step 4: Simplify right side
   10,525.19x = 82,960,300.48
5. Step 5: Solve for x
   x = 82,960,300.48/10,525.19
6. Step 6: Final answer
   x = 7,882.08