Finding the Fourth Proportional to 10,104.87, 15,158.28 and 3,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,104.87 : 15,158.28 = 3,870.12 : x
2. Step 2: Convert to fraction form
   10,104.87/15,158.28 = 3,870.12/x
3. Step 3: Cross multiply
   10,104.87x = 15,158.28 × 3,870.12
4. Step 4: Simplify right side
   10,104.87x = 58,664,362.59
5. Step 5: Solve for x
   x = 58,664,362.59/10,104.87
6. Step 6: Final answer
   x = 5,805.55