Finding the Fourth Proportional to 3,716.25, 5,128.59 and 2,223.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,716.25 : 5,128.59 = 2,223.88 : x
2. Step 2: Convert to fraction form
   3,716.25/5,128.59 = 2,223.88/x
3. Step 3: Cross multiply
   3,716.25x = 5,128.59 × 2,223.88
4. Step 4: Simplify right side
   3,716.25x = 11,405,357.61
5. Step 5: Solve for x
   x = 11,405,357.61/3,716.25
6. Step 6: Final answer
   x = 3,069.05