Finding the Fourth Proportional to 16,816.69, 25,222.15 and 7,580.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,816.69 : 25,222.15 = 7,580.53 : x
2. Step 2: Convert to fraction form
   16,816.69/25,222.15 = 7,580.53/x
3. Step 3: Cross multiply
   16,816.69x = 25,222.15 × 7,580.53
4. Step 4: Simplify right side
   16,816.69x = 191,197,264.74
5. Step 5: Solve for x
   x = 191,197,264.74/16,816.69
6. Step 6: Final answer
   x = 11,369.49