Finding the Fourth Proportional to 10,546.94, 15,815.82 and 5,615.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,546.94 : 15,815.82 = 5,615.48 : x
2. Step 2: Convert to fraction form
   10,546.94/15,815.82 = 5,615.48/x
3. Step 3: Cross multiply
   10,546.94x = 15,815.82 × 5,615.48
4. Step 4: Simplify right side
   10,546.94x = 88,813,420.89
5. Step 5: Solve for x
   x = 88,813,420.89/10,546.94
6. Step 6: Final answer
   x = 8,420.78