Finding the Fourth Proportional to 21,557.69, 32,315.53 and 10,310.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,557.69 : 32,315.53 = 10,310.10 : x
2. Step 2: Convert to fraction form
   21,557.69/32,315.53 = 10,310.10/x
3. Step 3: Cross multiply
   21,557.69x = 32,315.53 × 10,310.10
4. Step 4: Simplify right side
   21,557.69x = 333,176,455.29
5. Step 5: Solve for x
   x = 333,176,455.29/21,557.69
6. Step 6: Final answer
   x = 15,455.11