Finding the Fourth Proportional to 5,153.60, 7,111.59 and 2,915.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,153.60 : 7,111.59 = 2,915.71 : x
2. Step 2: Convert to fraction form
   5,153.60/7,111.59 = 2,915.71/x
3. Step 3: Cross multiply
   5,153.60x = 7,111.59 × 2,915.71
4. Step 4: Simplify right side
   5,153.60x = 20,735,334.08
5. Step 5: Solve for x
   x = 20,735,334.08/5,153.60
6. Step 6: Final answer
   x = 4,023.47