Finding the Fourth Proportional to 12,885.85, 19,310.55 and 5,482.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,885.85 : 19,310.55 = 5,482.86 : x
2. Step 2: Convert to fraction form
   12,885.85/19,310.55 = 5,482.86/x
3. Step 3: Cross multiply
   12,885.85x = 19,310.55 × 5,482.86
4. Step 4: Simplify right side
   12,885.85x = 105,876,980.04
5. Step 5: Solve for x
   x = 105,876,980.04/12,885.85
6. Step 6: Final answer
   x = 8,216.53