Finding the Fourth Proportional to 8,111.76, 12,167.04 and 3,938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.76 : 12,167.04 = 3,938.88 : x
2. Step 2: Convert to fraction form
   8,111.76/12,167.04 = 3,938.88/x
3. Step 3: Cross multiply
   8,111.76x = 12,167.04 × 3,938.88
4. Step 4: Simplify right side
   8,111.76x = 47,924,510.52
5. Step 5: Solve for x
   x = 47,924,510.52/8,111.76
6. Step 6: Final answer
   x = 5,908.03