Finding the Fourth Proportional to 21,916.38, 32,860.50 and 13,029.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,916.38 : 32,860.50 = 13,029.34 : x
2. Step 2: Convert to fraction form
   21,916.38/32,860.50 = 13,029.34/x
3. Step 3: Cross multiply
   21,916.38x = 32,860.50 × 13,029.34
4. Step 4: Simplify right side
   21,916.38x = 428,150,627.07
5. Step 5: Solve for x
   x = 428,150,627.07/21,916.38
6. Step 6: Final answer
   x = 19,535.65