Finding the Fourth Proportional to 10,536.09, 15,804.85 and 3,139.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,536.09 : 15,804.85 = 3,139.98 : x
2. Step 2: Convert to fraction form
   10,536.09/15,804.85 = 3,139.98/x
3. Step 3: Cross multiply
   10,536.09x = 15,804.85 × 3,139.98
4. Step 4: Simplify right side
   10,536.09x = 49,626,912.90
5. Step 5: Solve for x
   x = 49,626,912.90/10,536.09
6. Step 6: Final answer
   x = 4,710.18