Finding the Fourth Proportional to 7,752.76, 10,698.78 and 4,216.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,752.76 : 10,698.78 = 4,216.12 : x
2. Step 2: Convert to fraction form
   7,752.76/10,698.78 = 4,216.12/x
3. Step 3: Cross multiply
   7,752.76x = 10,698.78 × 4,216.12
4. Step 4: Simplify right side
   7,752.76x = 45,107,340.33
5. Step 5: Solve for x
   x = 45,107,340.33/7,752.76
6. Step 6: Final answer
   x = 5,818.23