Finding the Fourth Proportional to 5,086.80, 7,623.72 and 3,926.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.80 : 7,623.72 = 3,926.88 : x
2. Step 2: Convert to fraction form
   5,086.80/7,623.72 = 3,926.88/x
3. Step 3: Cross multiply
   5,086.80x = 7,623.72 × 3,926.88
4. Step 4: Simplify right side
   5,086.80x = 29,937,433.59
5. Step 5: Solve for x
   x = 29,937,433.59/5,086.80
6. Step 6: Final answer
   x = 5,885.32