Finding the Fourth Proportional to 9,156.55, 13,725.57 and 3,607.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.55 : 13,725.57 = 3,607.74 : x
2. Step 2: Convert to fraction form
   9,156.55/13,725.57 = 3,607.74/x
3. Step 3: Cross multiply
   9,156.55x = 13,725.57 × 3,607.74
4. Step 4: Simplify right side
   9,156.55x = 49,518,287.91
5. Step 5: Solve for x
   x = 49,518,287.91/9,156.55
6. Step 6: Final answer
   x = 5,407.96