Finding the Fourth Proportional to 8,787.89, 12,127.27 and 4,809.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,787.89 : 12,127.27 = 4,809.01 : x
2. Step 2: Convert to fraction form
   8,787.89/12,127.27 = 4,809.01/x
3. Step 3: Cross multiply
   8,787.89x = 12,127.27 × 4,809.01
4. Step 4: Simplify right side
   8,787.89x = 58,320,120.36
5. Step 5: Solve for x
   x = 58,320,120.36/8,787.89
6. Step 6: Final answer
   x = 6,636.42