Finding the Fourth Proportional to 3,988.28, 5,977.02 and 3,870.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988.28 : 5,977.02 = 3,870.02 : x
2. Step 2: Convert to fraction form
   3,988.28/5,977.02 = 3,870.02/x
3. Step 3: Cross multiply
   3,988.28x = 5,977.02 × 3,870.02
4. Step 4: Simplify right side
   3,988.28x = 23,131,186.94
5. Step 5: Solve for x
   x = 23,131,186.94/3,988.28
6. Step 6: Final answer
   x = 5,799.79