Finding the Fourth Proportional to 10,705.49, 16,056.81 and 4,860.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,705.49 : 16,056.81 = 4,860.75 : x
2. Step 2: Convert to fraction form
   10,705.49/16,056.81 = 4,860.75/x
3. Step 3: Cross multiply
   10,705.49x = 16,056.81 × 4,860.75
4. Step 4: Simplify right side
   10,705.49x = 78,048,139.21
5. Step 5: Solve for x
   x = 78,048,139.21/10,705.49
6. Step 6: Final answer
   x = 7,290.48