Finding the Fourth Proportional to 10,619.48, 15,931.78 and 3,223.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,619.48 : 15,931.78 = 3,223.50 : x
2. Step 2: Convert to fraction form
   10,619.48/15,931.78 = 3,223.50/x
3. Step 3: Cross multiply
   10,619.48x = 15,931.78 × 3,223.50
4. Step 4: Simplify right side
   10,619.48x = 51,356,092.83
5. Step 5: Solve for x
   x = 51,356,092.83/10,619.48
6. Step 6: Final answer
   x = 4,836.03