Finding the Fourth Proportional to 10,860.74, 16,280.72 and 3,460.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,860.74 : 16,280.72 = 3,460.42 : x
2. Step 2: Convert to fraction form
   10,860.74/16,280.72 = 3,460.42/x
3. Step 3: Cross multiply
   10,860.74x = 16,280.72 × 3,460.42
4. Step 4: Simplify right side
   10,860.74x = 56,338,129.10
5. Step 5: Solve for x
   x = 56,338,129.10/10,860.74
6. Step 6: Final answer
   x = 5,187.32