Finding the Fourth Proportional to 10,423.87, 15,637.30 and 3,402.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,423.87 : 15,637.30 = 3,402.15 : x
2. Step 2: Convert to fraction form
   10,423.87/15,637.30 = 3,402.15/x
3. Step 3: Cross multiply
   10,423.87x = 15,637.30 × 3,402.15
4. Step 4: Simplify right side
   10,423.87x = 53,200,480.15
5. Step 5: Solve for x
   x = 53,200,480.15/10,423.87
6. Step 6: Final answer
   x = 5,103.72