Finding the Fourth Proportional to 10,910.84, 16,371.12 and 5,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,910.84 : 16,371.12 = 5,715.50 : x
2. Step 2: Convert to fraction form
   10,910.84/16,371.12 = 5,715.50/x
3. Step 3: Cross multiply
   10,910.84x = 16,371.12 × 5,715.50
4. Step 4: Simplify right side
   10,910.84x = 93,569,136.36
5. Step 5: Solve for x
   x = 93,569,136.36/10,910.84
6. Step 6: Final answer
   x = 8,575.80