Finding the Fourth Proportional to 8,729.90, 13,091.01 and 2,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,729.90 : 13,091.01 = 2,488.50 : x
2. Step 2: Convert to fraction form
   8,729.90/13,091.01 = 2,488.50/x
3. Step 3: Cross multiply
   8,729.90x = 13,091.01 × 2,488.50
4. Step 4: Simplify right side
   8,729.90x = 32,576,978.39
5. Step 5: Solve for x
   x = 32,576,978.39/8,729.90
6. Step 6: Final answer
   x = 3,731.65