Finding the Fourth Proportional to 8,776.63, 12,111.75 and 5,052.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.63 : 12,111.75 = 5,052.79 : x
2. Step 2: Convert to fraction form
   8,776.63/12,111.75 = 5,052.79/x
3. Step 3: Cross multiply
   8,776.63x = 12,111.75 × 5,052.79
4. Step 4: Simplify right side
   8,776.63x = 61,198,043.46
5. Step 5: Solve for x
   x = 61,198,043.46/8,776.63
6. Step 6: Final answer
   x = 6,972.84