Finding the Fourth Proportional to 6,456.31, 8,910.00 and 5,056.63

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.31 : 8,910.00 = 5,056.63 : x
2. Step 2: Convert to fraction form
   6,456.31/8,910.00 = 5,056.63/x
3. Step 3: Cross multiply
   6,456.31x = 8,910.00 × 5,056.63
4. Step 4: Simplify right side
   6,456.31x = 45,054,503.47
5. Step 5: Solve for x
   x = 45,054,503.47/6,456.31
6. Step 6: Final answer
   x = 6,978.37