Finding the Fourth Proportional to 10,855.86, 16,280.01 and 4,615.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.86 : 16,280.01 = 4,615.62 : x
2. Step 2: Convert to fraction form
   10,855.86/16,280.01 = 4,615.62/x
3. Step 3: Cross multiply
   10,855.86x = 16,280.01 × 4,615.62
4. Step 4: Simplify right side
   10,855.86x = 75,142,339.76
5. Step 5: Solve for x
   x = 75,142,339.76/10,855.86
6. Step 6: Final answer
   x = 6,921.82