Finding the Fourth Proportional to 10,426.50, 15,639.86 and 2,635.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.50 : 15,639.86 = 2,635.32 : x
2. Step 2: Convert to fraction form
   10,426.50/15,639.86 = 2,635.32/x
3. Step 3: Cross multiply
   10,426.50x = 15,639.86 × 2,635.32
4. Step 4: Simplify right side
   10,426.50x = 41,216,022.68
5. Step 5: Solve for x
   x = 41,216,022.68/10,426.50
6. Step 6: Final answer
   x = 3,953.01