Finding the Fourth Proportional to 4,915.60, 7,362.60 and 3,811.30

Step by Step Solution

1. Step 1: Write the proportion equation
   4,915.60 : 7,362.60 = 3,811.30 : x
2. Step 2: Convert to fraction form
   4,915.60/7,362.60 = 3,811.30/x
3. Step 3: Cross multiply
   4,915.60x = 7,362.60 × 3,811.30
4. Step 4: Simplify right side
   4,915.60x = 28,061,077.38
5. Step 5: Solve for x
   x = 28,061,077.38/4,915.60
6. Step 6: Final answer
   x = 5,708.58