Finding the Fourth Proportional to 5,301.30, 7,315.88 and 2,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,301.30 : 7,315.88 = 2,911.50 : x
2. Step 2: Convert to fraction form
   5,301.30/7,315.88 = 2,911.50/x
3. Step 3: Cross multiply
   5,301.30x = 7,315.88 × 2,911.50
4. Step 4: Simplify right side
   5,301.30x = 21,300,184.62
5. Step 5: Solve for x
   x = 21,300,184.62/5,301.30
6. Step 6: Final answer
   x = 4,017.92