Finding the Fourth Proportional to 11,021.45, 16,519.88 and 4,772.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,021.45 : 16,519.88 = 4,772.10 : x
2. Step 2: Convert to fraction form
   11,021.45/16,519.88 = 4,772.10/x
3. Step 3: Cross multiply
   11,021.45x = 16,519.88 × 4,772.10
4. Step 4: Simplify right side
   11,021.45x = 78,834,559.93
5. Step 5: Solve for x
   x = 78,834,559.93/11,021.45
6. Step 6: Final answer
   x = 7,152.83