Finding the Fourth Proportional to 10,153.83, 15,231.83 and 2,758.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,153.83 : 15,231.83 = 2,758.40 : x
2. Step 2: Convert to fraction form
   10,153.83/15,231.83 = 2,758.40/x
3. Step 3: Cross multiply
   10,153.83x = 15,231.83 × 2,758.40
4. Step 4: Simplify right side
   10,153.83x = 42,015,389.92
5. Step 5: Solve for x
   x = 42,015,389.92/10,153.83
6. Step 6: Final answer
   x = 4,137.89