Finding the Fourth Proportional to 8,871.63, 12,242.71 and 4,892.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,871.63 : 12,242.71 = 4,892.64 : x
2. Step 2: Convert to fraction form
   8,871.63/12,242.71 = 4,892.64/x
3. Step 3: Cross multiply
   8,871.63x = 12,242.71 × 4,892.64
4. Step 4: Simplify right side
   8,871.63x = 59,899,172.65
5. Step 5: Solve for x
   x = 59,899,172.65/8,871.63
6. Step 6: Final answer
   x = 6,751.77