Finding the Fourth Proportional to 20,794.83, 31,173.61 and 7,638.00

Step by Step Solution

1. Step 1: Write the proportion equation
   20,794.83 : 31,173.61 = 7,638.00 : x
2. Step 2: Convert to fraction form
   20,794.83/31,173.61 = 7,638.00/x
3. Step 3: Cross multiply
   20,794.83x = 31,173.61 × 7,638.00
4. Step 4: Simplify right side
   20,794.83x = 238,103,911.51
5. Step 5: Solve for x
   x = 238,103,911.51/20,794.83
6. Step 6: Final answer
   x = 11,450.15