Finding the Fourth Proportional to 20,807.00, 31,213.61 and 7,658.37

Step by Step Solution

1. Step 1: Write the proportion equation
   20,807.00 : 31,213.61 = 7,658.37 : x
2. Step 2: Convert to fraction form
   20,807.00/31,213.61 = 7,658.37/x
3. Step 3: Cross multiply
   20,807.00x = 31,213.61 × 7,658.37
4. Step 4: Simplify right side
   20,807.00x = 239,045,180.06
5. Step 5: Solve for x
   x = 239,045,180.06/20,807.00
6. Step 6: Final answer
   x = 11,488.69