Finding the Fourth Proportional to 11,752.31, 16,216.20 and 7,771.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,752.31 : 16,216.20 = 7,771.30 : x
2. Step 2: Convert to fraction form
   11,752.31/16,216.20 = 7,771.30/x
3. Step 3: Cross multiply
   11,752.31x = 16,216.20 × 7,771.30
4. Step 4: Simplify right side
   11,752.31x = 126,020,914.52
5. Step 5: Solve for x
   x = 126,020,914.52/11,752.31
6. Step 6: Final answer
   x = 10,723.07