Finding the Fourth Proportional to 3,861.77, 5,781.69 and 3,238.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.77 : 5,781.69 = 3,238.47 : x
2. Step 2: Convert to fraction form
   3,861.77/5,781.69 = 3,238.47/x
3. Step 3: Cross multiply
   3,861.77x = 5,781.69 × 3,238.47
4. Step 4: Simplify right side
   3,861.77x = 18,723,829.61
5. Step 5: Solve for x
   x = 18,723,829.61/3,861.77
6. Step 6: Final answer
   x = 4,848.52