Finding the Fourth Proportional to 11,764.50, 17,654.85 and 4,839

Step by Step Solution

1. Step 1: Write the proportion equation
   11,764.50 : 17,654.85 = 4,839 : x
2. Step 2: Convert to fraction form
   11,764.50/17,654.85 = 4,839/x
3. Step 3: Cross multiply
   11,764.50x = 17,654.85 × 4,839
4. Step 4: Simplify right side
   11,764.50x = 85,431,819.15
5. Step 5: Solve for x
   x = 85,431,819.15/11,764.50
6. Step 6: Final answer
   x = 7,261.83