Finding the Fourth Proportional to 21,672.85, 32,513.31 and 6,877.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,672.85 : 32,513.31 = 6,877.78 : x
2. Step 2: Convert to fraction form
   21,672.85/32,513.31 = 6,877.78/x
3. Step 3: Cross multiply
   21,672.85x = 32,513.31 × 6,877.78
4. Step 4: Simplify right side
   21,672.85x = 223,619,196.30
5. Step 5: Solve for x
   x = 223,619,196.30/21,672.85
6. Step 6: Final answer
   x = 10,317.94