Finding the Fourth Proportional to 6,463.89, 8,910.72 and 5,138.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,463.89 : 8,910.72 = 5,138.06 : x
2. Step 2: Convert to fraction form
   6,463.89/8,910.72 = 5,138.06/x
3. Step 3: Cross multiply
   6,463.89x = 8,910.72 × 5,138.06
4. Step 4: Simplify right side
   6,463.89x = 45,783,769.45
5. Step 5: Solve for x
   x = 45,783,769.45/6,463.89
6. Step 6: Final answer
   x = 7,083.01