Finding the Fourth Proportional to 5,087.31, 7,012.37 and 4,291.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,087.31 : 7,012.37 = 4,291.79 : x
2. Step 2: Convert to fraction form
   5,087.31/7,012.37 = 4,291.79/x
3. Step 3: Cross multiply
   5,087.31x = 7,012.37 × 4,291.79
4. Step 4: Simplify right side
   5,087.31x = 30,095,595.11
5. Step 5: Solve for x
   x = 30,095,595.11/5,087.31
6. Step 6: Final answer
   x = 5,915.82