Finding the Fourth Proportional to 8,472.41, 11,692.05 and 4,887.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472.41 : 11,692.05 = 4,887.31 : x
2. Step 2: Convert to fraction form
   8,472.41/11,692.05 = 4,887.31/x
3. Step 3: Cross multiply
   8,472.41x = 11,692.05 × 4,887.31
4. Step 4: Simplify right side
   8,472.41x = 57,142,672.89
5. Step 5: Solve for x
   x = 57,142,672.89/8,472.41
6. Step 6: Final answer
   x = 6,744.56