Finding the Fourth Proportional to 5,772.56, 7,915.06 and 5,210.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,772.56 : 7,915.06 = 5,210.96 : x
2. Step 2: Convert to fraction form
   5,772.56/7,915.06 = 5,210.96/x
3. Step 3: Cross multiply
   5,772.56x = 7,915.06 × 5,210.96
4. Step 4: Simplify right side
   5,772.56x = 41,245,061.06
5. Step 5: Solve for x
   x = 41,245,061.06/5,772.56
6. Step 6: Final answer
   x = 7,145.02