Finding the Fourth Proportional to 10,315.59, 15,475.47 and 4,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,315.59 : 15,475.47 = 4,078.56 : x
2. Step 2: Convert to fraction form
   10,315.59/15,475.47 = 4,078.56/x
3. Step 3: Cross multiply
   10,315.59x = 15,475.47 × 4,078.56
4. Step 4: Simplify right side
   10,315.59x = 63,117,632.92
5. Step 5: Solve for x
   x = 63,117,632.92/10,315.59
6. Step 6: Final answer
   x = 6,118.66