Finding the Fourth Proportional to 7,315.09, 10,970.20 and 3,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,315.09 : 10,970.20 = 3,152.50 : x
2. Step 2: Convert to fraction form
   7,315.09/10,970.20 = 3,152.50/x
3. Step 3: Cross multiply
   7,315.09x = 10,970.20 × 3,152.50
4. Step 4: Simplify right side
   7,315.09x = 34,583,555.50
5. Step 5: Solve for x
   x = 34,583,555.50/7,315.09
6. Step 6: Final answer
   x = 4,727.70