Finding the Fourth Proportional to 21,616.89, 32,429.25 and 10,523.57

Step by Step Solution

1. Step 1: Write the proportion equation
   21,616.89 : 32,429.25 = 10,523.57 : x
2. Step 2: Convert to fraction form
   21,616.89/32,429.25 = 10,523.57/x
3. Step 3: Cross multiply
   21,616.89x = 32,429.25 × 10,523.57
4. Step 4: Simplify right side
   21,616.89x = 341,271,482.42
5. Step 5: Solve for x
   x = 341,271,482.42/21,616.89
6. Step 6: Final answer
   x = 15,787.26