Finding the Fourth Proportional to 21,614.89, 32,426.25 and 10,521.57

Step by Step Solution

1. Step 1: Write the proportion equation
   21,614.89 : 32,426.25 = 10,521.57 : x
2. Step 2: Convert to fraction form
   21,614.89/32,426.25 = 10,521.57/x
3. Step 3: Cross multiply
   21,614.89x = 32,426.25 × 10,521.57
4. Step 4: Simplify right side
   21,614.89x = 341,175,059.21
5. Step 5: Solve for x
   x = 341,175,059.21/21,614.89
6. Step 6: Final answer
   x = 15,784.26