Finding the Fourth Proportional to 5,085.46, 7,015.71 and 2,988.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.46 : 7,015.71 = 2,988.64 : x
2. Step 2: Convert to fraction form
   5,085.46/7,015.71 = 2,988.64/x
3. Step 3: Cross multiply
   5,085.46x = 7,015.71 × 2,988.64
4. Step 4: Simplify right side
   5,085.46x = 20,967,431.53
5. Step 5: Solve for x
   x = 20,967,431.53/5,085.46
6. Step 6: Final answer
   x = 4,123.02