Finding the Fourth Proportional to 21,334, 32,012.52 and 10,390

Step by Step Solution

1. Step 1: Write the proportion equation
   21,334 : 32,012.52 = 10,390 : x
2. Step 2: Convert to fraction form
   21,334/32,012.52 = 10,390/x
3. Step 3: Cross multiply
   21,334x = 32,012.52 × 10,390
4. Step 4: Simplify right side
   21,334x = 332,610,082.80
5. Step 5: Solve for x
   x = 332,610,082.80/21,334
6. Step 6: Final answer
   x = 15,590.61