Finding the Fourth Proportional to 21,485.31, 32,240.72 and 11,624.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,485.31 : 32,240.72 = 11,624.37 : x
2. Step 2: Convert to fraction form
   21,485.31/32,240.72 = 11,624.37/x
3. Step 3: Cross multiply
   21,485.31x = 32,240.72 × 11,624.37
4. Step 4: Simplify right side
   21,485.31x = 374,778,058.35
5. Step 5: Solve for x
   x = 374,778,058.35/21,485.31
6. Step 6: Final answer
   x = 17,443.46