Finding the Fourth Proportional to 5,152.33, 7,116.02 and 3,987.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,152.33 : 7,116.02 = 3,987.55 : x
2. Step 2: Convert to fraction form
   5,152.33/7,116.02 = 3,987.55/x
3. Step 3: Cross multiply
   5,152.33x = 7,116.02 × 3,987.55
4. Step 4: Simplify right side
   5,152.33x = 28,375,485.55
5. Step 5: Solve for x
   x = 28,375,485.55/5,152.33
6. Step 6: Final answer
   x = 5,507.31