Finding the Fourth Proportional to 21,456.85, 32,192.25 and 10,364.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,456.85 : 32,192.25 = 10,364.81 : x
2. Step 2: Convert to fraction form
   21,456.85/32,192.25 = 10,364.81/x
3. Step 3: Cross multiply
   21,456.85x = 32,192.25 × 10,364.81
4. Step 4: Simplify right side
   21,456.85x = 333,666,393.76
5. Step 5: Solve for x
   x = 333,666,393.76/21,456.85
6. Step 6: Final answer
   x = 15,550.58