Finding the Fourth Proportional to 11,144.84, 16,722.72 and 7,878.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,144.84 : 16,722.72 = 7,878.92 : x
2. Step 2: Convert to fraction form
   11,144.84/16,722.72 = 7,878.92/x
3. Step 3: Cross multiply
   11,144.84x = 16,722.72 × 7,878.92
4. Step 4: Simplify right side
   11,144.84x = 131,756,973.06
5. Step 5: Solve for x
   x = 131,756,973.06/11,144.84
6. Step 6: Final answer
   x = 11,822.24