Finding the Fourth Proportional to 10,536.51, 15,804.63 and 3,139.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,536.51 : 15,804.63 = 3,139.86 : x
2. Step 2: Convert to fraction form
   10,536.51/15,804.63 = 3,139.86/x
3. Step 3: Cross multiply
   10,536.51x = 15,804.63 × 3,139.86
4. Step 4: Simplify right side
   10,536.51x = 49,624,325.55
5. Step 5: Solve for x
   x = 49,624,325.55/10,536.51
6. Step 6: Final answer
   x = 4,709.75