Finding the Fourth Proportional to 21,715.89, 32,562.82 and 10,605.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,715.89 : 32,562.82 = 10,605.93 : x
2. Step 2: Convert to fraction form
   21,715.89/32,562.82 = 10,605.93/x
3. Step 3: Cross multiply
   21,715.89x = 32,562.82 × 10,605.93
4. Step 4: Simplify right side
   21,715.89x = 345,358,989.52
5. Step 5: Solve for x
   x = 345,358,989.52/21,715.89
6. Step 6: Final answer
   x = 15,903.52