Finding the Fourth Proportional to 10,722.06, 16,076.61 and 7,248.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.06 : 16,076.61 = 7,248.78 : x
2. Step 2: Convert to fraction form
   10,722.06/16,076.61 = 7,248.78/x
3. Step 3: Cross multiply
   10,722.06x = 16,076.61 × 7,248.78
4. Step 4: Simplify right side
   10,722.06x = 116,535,809.04
5. Step 5: Solve for x
   x = 116,535,809.04/10,722.06
6. Step 6: Final answer
   x = 10,868.79