Finding the Fourth Proportional to 3,987.89, 5,977.54 and 3,803.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.89 : 5,977.54 = 3,803.88 : x
2. Step 2: Convert to fraction form
   3,987.89/5,977.54 = 3,803.88/x
3. Step 3: Cross multiply
   3,987.89x = 5,977.54 × 3,803.88
4. Step 4: Simplify right side
   3,987.89x = 22,737,844.86
5. Step 5: Solve for x
   x = 22,737,844.86/3,987.89
6. Step 6: Final answer
   x = 5,701.72