Finding the Fourth Proportional to 21,435.74, 32,174.34 and 10,350.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,435.74 : 32,174.34 = 10,350.21 : x
2. Step 2: Convert to fraction form
   21,435.74/32,174.34 = 10,350.21/x
3. Step 3: Cross multiply
   21,435.74x = 32,174.34 × 10,350.21
4. Step 4: Simplify right side
   21,435.74x = 333,011,175.61
5. Step 5: Solve for x
   x = 333,011,175.61/21,435.74
6. Step 6: Final answer
   x = 15,535.32