Finding the Fourth Proportional to 10,525.30, 15,790.42 and 3,129.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,525.30 : 15,790.42 = 3,129.82 : x
2. Step 2: Convert to fraction form
   10,525.30/15,790.42 = 3,129.82/x
3. Step 3: Cross multiply
   10,525.30x = 15,790.42 × 3,129.82
4. Step 4: Simplify right side
   10,525.30x = 49,421,172.32
5. Step 5: Solve for x
   x = 49,421,172.32/10,525.30
6. Step 6: Final answer
   x = 4,695.46