Finding the Fourth Proportional to 21,591.67, 32,373.59 and 9,108.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,591.67 : 32,373.59 = 9,108.35 : x
2. Step 2: Convert to fraction form
   21,591.67/32,373.59 = 9,108.35/x
3. Step 3: Cross multiply
   21,591.67x = 32,373.59 × 9,108.35
4. Step 4: Simplify right side
   21,591.67x = 294,870,046.64
5. Step 5: Solve for x
   x = 294,870,046.64/21,591.67
6. Step 6: Final answer
   x = 13,656.66