Finding the Fourth Proportional to 21,200.50, 31,815.33 and 7,349.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,200.50 : 31,815.33 = 7,349.50 : x
2. Step 2: Convert to fraction form
   21,200.50/31,815.33 = 7,349.50/x
3. Step 3: Cross multiply
   21,200.50x = 31,815.33 × 7,349.50
4. Step 4: Simplify right side
   21,200.50x = 233,826,767.84
5. Step 5: Solve for x
   x = 233,826,767.84/21,200.50
6. Step 6: Final answer
   x = 11,029.30