Finding the Fourth Proportional to 9,182.72, 12,672.50 and 4,990.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,182.72 : 12,672.50 = 4,990.96 : x
2. Step 2: Convert to fraction form
   9,182.72/12,672.50 = 4,990.96/x
3. Step 3: Cross multiply
   9,182.72x = 12,672.50 × 4,990.96
4. Step 4: Simplify right side
   9,182.72x = 63,247,940.60
5. Step 5: Solve for x
   x = 63,247,940.60/9,182.72
6. Step 6: Final answer
   x = 6,887.71