Finding the Fourth Proportional to 21,323.74, 31,979.13 and 7,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,323.74 : 31,979.13 = 7,469.50 : x
2. Step 2: Convert to fraction form
   21,323.74/31,979.13 = 7,469.50/x
3. Step 3: Cross multiply
   21,323.74x = 31,979.13 × 7,469.50
4. Step 4: Simplify right side
   21,323.74x = 238,868,111.54
5. Step 5: Solve for x
   x = 238,868,111.54/21,323.74
6. Step 6: Final answer
   x = 11,201.98