Finding the Fourth Proportional to 10,539.72, 15,804.90 and 3,141.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,539.72 : 15,804.90 = 3,141.72 : x
2. Step 2: Convert to fraction form
   10,539.72/15,804.90 = 3,141.72/x
3. Step 3: Cross multiply
   10,539.72x = 15,804.90 × 3,141.72
4. Step 4: Simplify right side
   10,539.72x = 49,654,570.43
5. Step 5: Solve for x
   x = 49,654,570.43/10,539.72
6. Step 6: Final answer
   x = 4,711.18