Finding the Fourth Proportional to 21,503.25, 32,246.67 and 10,256.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,503.25 : 32,246.67 = 10,256.61 : x
2. Step 2: Convert to fraction form
   21,503.25/32,246.67 = 10,256.61/x
3. Step 3: Cross multiply
   21,503.25x = 32,246.67 × 10,256.61
4. Step 4: Simplify right side
   21,503.25x = 330,741,435.53
5. Step 5: Solve for x
   x = 330,741,435.53/21,503.25
6. Step 6: Final answer
   x = 15,380.99