Finding the Fourth Proportional to 6,432.89, 8,877.71 and 3,781.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,432.89 : 8,877.71 = 3,781.15 : x
2. Step 2: Convert to fraction form
   6,432.89/8,877.71 = 3,781.15/x
3. Step 3: Cross multiply
   6,432.89x = 8,877.71 × 3,781.15
4. Step 4: Simplify right side
   6,432.89x = 33,567,940.43
5. Step 5: Solve for x
   x = 33,567,940.43/6,432.89
6. Step 6: Final answer
   x = 5,218.18