Finding the Fourth Proportional to 10,885.86, 16,320.83 and 3,486.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.86 : 16,320.83 = 3,486.11 : x
2. Step 2: Convert to fraction form
   10,885.86/16,320.83 = 3,486.11/x
3. Step 3: Cross multiply
   10,885.86x = 16,320.83 × 3,486.11
4. Step 4: Simplify right side
   10,885.86x = 56,896,109.64
5. Step 5: Solve for x
   x = 56,896,109.64/10,885.86
6. Step 6: Final answer
   x = 5,226.61