Finding the Fourth Proportional to 21,485.37, 32,220.33 and 7,441.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,485.37 : 32,220.33 = 7,441.61 : x
2. Step 2: Convert to fraction form
   21,485.37/32,220.33 = 7,441.61/x
3. Step 3: Cross multiply
   21,485.37x = 32,220.33 × 7,441.61
4. Step 4: Simplify right side
   21,485.37x = 239,771,092.72
5. Step 5: Solve for x
   x = 239,771,092.72/21,485.37
6. Step 6: Final answer
   x = 11,159.74