Finding the Fourth Proportional to 21,277.50, 31,930.83 and 7,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,277.50 : 31,930.83 = 7,426.50 : x
2. Step 2: Convert to fraction form
   21,277.50/31,930.83 = 7,426.50/x
3. Step 3: Cross multiply
   21,277.50x = 31,930.83 × 7,426.50
4. Step 4: Simplify right side
   21,277.50x = 237,134,309.00
5. Step 5: Solve for x
   x = 237,134,309.00/21,277.50
6. Step 6: Final answer
   x = 11,144.84