Finding the Fourth Proportional to 10,372.56, 15,544.89 and 5,685.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,372.56 : 15,544.89 = 5,685.54 : x
2. Step 2: Convert to fraction form
   10,372.56/15,544.89 = 5,685.54/x
3. Step 3: Cross multiply
   10,372.56x = 15,544.89 × 5,685.54
4. Step 4: Simplify right side
   10,372.56x = 88,381,093.89
5. Step 5: Solve for x
   x = 88,381,093.89/10,372.56
6. Step 6: Final answer
   x = 8,520.66